Ear Canal
Tympanic Membrane
Ear
Ear, Middle
Otitis Externa
Cerumen
Stapes
Acoustic Impedance Tests
Semicircular Canals
Ear, External
Ear, Inner
Scala Vestibuli
Bone Conduction
Ear Ossicles
Otoacoustic Emissions, Spontaneous
Root Canal Preparation
Round Window, Ear
Acoustics
Incus
Ear Protective Devices
Cochlea
Ear Neoplasms
Tympanic Membrane Perforation
Hearing Loss, Conductive
Perceptual Distortion
Hearing
Root Canal Irrigants
Dental Pulp Cavity
Malleus
Temporal Bone
Basilar Membrane
Root Canal Filling Materials
Pressure
Otitis Media with Effusion
Benzethonium
Sound Spectrography
Malassezia
Cochlear Microphonic Potentials
Audiometry
Gerbillinae
Psoroptidae
Audiometry, Pure-Tone
Hearing Aids
Anal Canal
Mites
Tooth Apex
Pitch Perception
Psychoacoustics
Vibration
Does vestibular stimulation activate thalamocortical mechanisms that reintegrate impaired cortical regions? (1/195)
Caloric stimulation induced a transient reversal of multimodal hemispatial cognitive deficits in an 81-year-old woman with an acute left cerebral hemisphere stroke. The patient had unawareness of her right hand (asomatognosia), right-sided visual unawareness (hemineglect), aphasia and right-sided weakness (hemiplegia) prior to the stimulation. Transient improvements in impaired sensory, motor, linguistic and cognitive function developed within 30 s following application of the caloric stimulus and onset of horizontal nystagmus. The effect persisted for 3 min and ceased completely after 5 min. While several recent reports have described the capacity of caloric stimulation to transiently improve or reverse a wide range of attentional, cognitive and motor impairments, most examples are in right-hemisphere-damaged patients with long-standing brain injury. Typically, patients have been tested several months or years after the onset of the deficit. A possible mechanism for the temporary reintegration of multiple cognitive functions in this patient is discussed. (+info)An aural myiasis case in a 54-year-old male farmer in Korea. (2/195)
A 54-year-old male farmer residing in Chunchon, Korea, complaining of blood tinged discharge and tinnitus in the left ear for two days, was examined in August 16, 1996. Otoscopic examination revealed live maggots from the ear canal. The patient did not complain of any symptoms after removal of maggots. Five maggots recovered were identified as the third stage larvae of Lucilia sericata (Diptera: Calliphoridae). This is the first record of aural myiasis in Korea. (+info)Magnetic resonance cisternography using the fast spin echo method for the evaluation of vestibular schwannoma. (3/195)
Neuroimaging of vestibular schwannoma was performed with the fat-suppression spoiled gradient recalled acquisition in the steady state (SPGR) method and magnetic resonance (MR) cisternography, which is a fast spin echo method using a long echo train length, for the preoperative evaluation of the lateral extension of the tumor in the internal auditory canal, and the anatomical identification of the posterior semicircular canal and the nerves in the canal distal to the tumor. The SPGR method overestimated the lateral extension in eight cases, probably because of enhancement of the nerves adjacent to the tumor in the canal. The posterior semicircular canal could not be clearly identified, and the cranial nerves in the canal were shown only as a nerve bundle. In contrast, MR cisternography showed clear images of the lateral extension of the tumor and the facial and cochlear nerves adjacent to the tumor in the internal auditory canal. The anatomical location of the posterior semicircular canal was also clearly shown. These preoperative findings are very useful to plan the extent to which the internal auditory canal can be opened, and for intraoperative identification of the nerves in the canal. MR cisternography is less invasive since no contrast material or radiation is required, as with thin-slice high-resolution computed tomography (CT). MR cisternography should replace high-resolution CT for the preoperative neuroradiological evaluation of vestibular schwannoma. (+info)Human beta-defensin-1 mRNA is transcribed in tympanic membrane and adjacent auditory canal epithelium. (4/195)
The external auditory canal is less susceptible to infections than the sensitive middle-ear cavity. Since recent research has provided insight to the production of potent antimicrobial peptides from various surface epithelia, we wanted to investigate whether protection of the external auditory canal in part could be explained by the production of human beta-defensin-1 (HBD-1). This particular peptide is known to be constitutively expressed in various surface epithelia, such as airway, skin, and urogenital tissues. By reverse transcriptase PCR we demonstrate HBD-1 mRNA in the pars tensa and pars flaccida of the tympanic membrane and in the meatal skin. In situ hybridization studies localized the HBD-1 mRNA to the epidermal layer of these tissues. The HBD-1 transcripts were also evident in the sebaceous glands and in hair follicles of the meatal skin. In contrast, HBD-1 mRNA was not detected in the tympanal epithelium of the eardrum. The widespread presence of mRNA encoding for this broad-spectrum antimicrobial peptide in the meatal skin and tympanic membrane suggests that HBD-1 participates in the innate antimicrobial defense of the external auditory canal and middle-ear cavity. (+info)Parathyroid hormone-parathyroid hormone-related peptide receptor expression and function in otosclerosis. (5/195)
The aim of this study was to investigate the possibility that an abnormality related to parathyroid hormone (PTH) action is involved in the increased bone turnover observed in otosclerosis. To do so, expression and function of the PTH-PTH-related peptide (PTHrP) receptor were studied in the involved tissue (stapes) and compared with that in control bone sample obtained from the external auditory canal (EAC) in the same patient in 10 cases of otosclerosis and in 1 case of osteogenesis imperfecta. PTH-PTHrP receptor expression was studied by RT-PCR of RNA prepared from cultured cells in three patients and RNA directly extracted from bone samples in four patients. PTH-PTHrP receptor function was assessed by measuring the stimulation of cAMP production by 0.8, 8, and 80 nM PTH in bone cell cultures in seven cases. Results showed that PTH-PTHrP receptor mRNA expression in the otosclerotic stapes was lower than that in EAC samples (P < 0.05), whereas it was higher in stapes than that in EAC in the case of osteogenesis imperfecta. cAMP production after PTH stimulation was lower in bone cells cultured from otosclerotic stapes compared with that in cells cultured from EAC (range of increase in stimulation: 0.8-4.5 and 1.5-7 in stapes and EAC bone cells, respectively, P < 0.05). In contrast, the stimulation of cAMP production by forskolin was not significantly different in otosclerotic stapes and EAC bone cells (range of increase in stimulation: 20.7-83.1 and 4.9-99.8 in stapes and EAC, respectively, P > 0.05). These results show a lower stimulation of cAMP production in response to PTH associated with a lower PTH-PTHrP receptor mRNA expression in pathological stapes from patients with otosclerosis compared with that in control EAC samples. This difference supports the hypothesis that an abnormal cellular response to PTH contributes to the abnormal bone turnover in otosclerosis. (+info)Study of lipid in the ear canal in canine otitis externa with Malassezia pachydermatis. (6/195)
An epidemiological investigation of 120 canine otitis externa cases in 1,370 dogs was done on the incidence rate, ear pinna shapes, breeds and their relationships. Eighty-five cases (12.6%) in 672 dogs with pendulous ears and 35 cases (5.0%) in 698 dogs with erect ears had otitis externa, and the difference between them was significant (P<0.05). Ninety-five auditory cerumen specimens were cultured for Malassezia pachydermatis (M. pachydermatis) and analyzed for concentrations of major fatty acids. Although rates of cases positive for M. pachydermatis in both ear pinna shapes were almost the same, i.e. 55.2% in the pendulous group and 53.6% in the erect group, the average total fatty acid level of the pendulous ear group was significantly (P<0.05) higher than that in the erect ear group after dismissing extraordinary levels in the Siberian husky. Isolated M. pachydermatis strains were examined for the effects of fatty acid supplementation on their growth. The majority of the strains utilized fatty acids and grew faster in fatty acid supplemented broth. These results suggest that M. pachydermatis, the predominant causative agent of canine otitis externa, prefers the auditory canal of dogs with lipid-rich earwax and grows fast, but growth strongly depends upon the canine breed. (+info)Isolating the auditory system from acoustic noise during functional magnetic resonance imaging: examination of noise conduction through the ear canal, head, and body. (7/195)
Approaches were examined for reducing acoustic noise levels heard by subjects during functional magnetic resonance imaging (fMRI), a technique for localizing brain activation in humans. Specifically, it was examined whether a device for isolating the head and ear canal from sound (a "helmet") could add to the isolation provided by conventional hearing protection devices (i.e., earmuffs and earplugs). Both subjective attenuation (the difference in hearing threshold with versus without isolation devices in place) and objective attenuation (difference in ear-canal sound pressure) were measured. In the frequency range of the most intense fMRI noise (1-1.4 kHz), a helmet, earmuffs, and earplugs used together attenuated perceived sound by 55-63 dB, whereas the attenuation provided by the conventional devices alone was substantially less: 30-37 dB for earmuffs, 25-28 dB for earplugs, and 39-41 dB for earmuffs and earplugs used together. The data enabled the clarification of the relative importance of ear canal, head, and body conduction routes to the cochlea under different conditions: At low frequencies (< or =500 Hz), the ear canal was the dominant route of sound conduction to the cochlea for all of the device combinations considered. At higher frequencies (>500 Hz), the ear canal was the dominant route when either earmuffs or earplugs were worn. However, the dominant route of sound conduction was through the head when both earmuffs and earplugs were worn, through both ear canal and body when a helmet and earmuffs were worn, and through the body when a helmet, earmuffs, and earplugs were worn. It is estimated that a helmet, earmuffs, and earplugs together will reduce the most intense fMRI noise levels experienced by a subject to 60-65 dB SPL. Even greater reductions in noise should be achievable by isolating the body from the surrounding noise field. (+info)Depression of sublingual temperature by cold saliva. (8/195)
Sublingual and oesophageal temperatures were compared at various air temperatures in 16 subjects. In warm air (25-44 degrees C) sublingual temperatures stabilized within plus or minus 0-45 degrees C of oesophageal temperatures, but in air at room temperature (18-24 degrees C) they were sometimes as much as 1-1 degrees C below and in cold air (5-10 degrees C) as much as 4-4 degrees C below oesophageal readings. The sublingual-oesophageal temperature difference in cold air was greatly reduced by keeping the face warm, but it was not reduced in two patients breathing through tracheostomies and thereby eliminating cold air flow from the nose and pharynx. Parotid saliva temperature was low and saliva flow high during exposure, and cold saliva seemed to be mainly responsible for the erratic depression of sublingual temperature in the cold. These results indicate hazards in the casual use of sublingual temperatures, and indicate that external heat may have to be supplied to enable them to give reliable clinical assessments of body temperature. (+info)The ear canal, also known as the external auditory canal, is the tubular passage that extends from the outer ear (pinna) to the eardrum (tympanic membrane). It is lined with skin and tiny hairs, and is responsible for conducting sound waves from the outside environment to the middle and inner ear. The ear canal is typically about 2.5 cm long in adults and has a self-cleaning mechanism that helps to keep it free of debris and wax.
The tympanic membrane, also known as the eardrum, is a thin, cone-shaped membrane that separates the external auditory canal from the middle ear. It serves to transmit sound vibrations from the air to the inner ear, where they are converted into electrical signals that can be interpreted by the brain as sound. The tympanic membrane is composed of three layers: an outer layer of skin, a middle layer of connective tissue, and an inner layer of mucous membrane. It is held in place by several small bones and muscles and is highly sensitive to changes in pressure.
The ear is the sensory organ responsible for hearing and maintaining balance. It can be divided into three parts: the outer ear, middle ear, and inner ear. The outer ear consists of the pinna (the visible part of the ear) and the external auditory canal, which directs sound waves toward the eardrum. The middle ear contains three small bones called ossicles that transmit sound vibrations from the eardrum to the inner ear. The inner ear contains the cochlea, a spiral-shaped organ responsible for converting sound vibrations into electrical signals that are sent to the brain, and the vestibular system, which is responsible for maintaining balance.
The middle ear is the middle of the three parts of the ear, located between the outer ear and inner ear. It contains three small bones called ossicles (the malleus, incus, and stapes) that transmit and amplify sound vibrations from the eardrum to the inner ear. The middle ear also contains the Eustachian tube, which helps regulate air pressure in the middle ear and protects against infection by allowing fluid to drain from the middle ear into the back of the throat.
Otitis externa, also known as swimmer's ear, is a medical condition characterized by inflammation or infection of the external auditory canal (the outermost part of the ear canal leading to the eardrum). It often occurs when water stays in the ear after swimming, creating a moist environment that promotes bacterial growth.
The symptoms of otitis externa may include:
- Redness and swelling of the ear canal
- Pain or discomfort in the ear, especially when moving the jaw or chewing
- Itching in the ear
- Discharge from the ear (pus or clear fluid)
- Hearing loss or difficulty hearing
Otitis externa is typically treated with antibiotic eardrops and sometimes oral antibiotics. Keeping the ear dry during treatment is important to prevent further irritation and promote healing. In severe cases, a healthcare provider may need to clean the ear canal before administering medication.
Cerumen is the medical term for earwax. It is a natural substance produced by the body to protect and clean the ears. Cerumen helps to keep the ear canal moist, which prevents dry, itchy ears, and also traps dirt, dust, and other particles that could harm the eardrum. The earwax then gradually moves out of the ear canal and falls out or is removed during activities like showering or washing the face. While some people may need to have their earwax removed if it builds up and causes hearing problems or discomfort, in most cases, cerumen does not need to be cleaned or removed.
The stapes is the smallest bone in the human body, which is a part of the middle ear. It is also known as the "stirrup" because of its U-shaped structure. The stapes connects the inner ear to the middle ear, transmitting sound vibrations from the ear drum to the inner ear. More specifically, it is the third bone in the series of three bones (the ossicles) that conduct sound waves from the air to the fluid-filled inner ear.
Acoustic impedance tests are diagnostic procedures used to measure the impedance or resistance of various parts of the ear to sound waves. These tests are often used to assess hearing function and diagnose any issues related to the middle ear, such as fluid buildup or problems with the eardrum.
The most common type of acoustic impedance test is tympanometry, which measures the mobility of the eardrum and the middle ear system by creating variations in air pressure within the ear canal. During this test, a small probe is inserted into the ear canal, and sound waves are generated while the pressure is varied. The resulting measurements provide information about the condition of the middle ear and can help identify any issues that may be affecting hearing.
Another type of acoustic impedance test is acoustic reflex testing, which measures the body's natural response to loud sounds. This involves measuring the contraction of the stapedius muscle in the middle ear, which occurs in response to loud noises. By measuring the strength and timing of this reflex, audiologists can gain additional insights into the functioning of the middle ear and identify any abnormalities that may be present.
Overall, acoustic impedance tests are important tools for diagnosing hearing problems and identifying any underlying issues in the middle ear. They are often used in conjunction with other hearing tests to provide a comprehensive assessment of an individual's hearing function.
The semicircular canals are part of the vestibular system in the inner ear that contributes to the sense of balance and spatial orientation. They are composed of three fluid-filled tubes, each located in a different plane (anterior, posterior, and horizontal) and arranged at approximately right angles to each other. The semicircular canals detect rotational movements of the head, enabling us to maintain our equilibrium during movement.
When the head moves, the fluid within the semicircular canals moves in response to that motion. At the end of each canal is a structure called the ampulla, which contains hair cells with hair-like projections (stereocilia) embedded in a gelatinous substance. As the fluid moves, it bends the stereocilia, stimulating the hair cells and sending signals to the brain via the vestibular nerve. The brain then interprets these signals to determine the direction and speed of head movement, allowing us to maintain our balance and orientation in space.
The external ear is the visible portion of the ear that resides outside of the head. It consists of two main structures: the pinna or auricle, which is the cartilaginous structure that people commonly refer to as the "ear," and the external auditory canal, which is the tubular passageway that leads to the eardrum (tympanic membrane).
The primary function of the external ear is to collect and direct sound waves into the middle and inner ear, where they can be converted into neural signals and transmitted to the brain for processing. The external ear also helps protect the middle and inner ear from damage by foreign objects and excessive noise.
The inner ear is the innermost part of the ear that contains the sensory organs for hearing and balance. It consists of a complex system of fluid-filled tubes and sacs called the vestibular system, which is responsible for maintaining balance and spatial orientation, and the cochlea, a spiral-shaped organ that converts sound vibrations into electrical signals that are sent to the brain.
The inner ear is located deep within the temporal bone of the skull and is protected by a bony labyrinth. The vestibular system includes the semicircular canals, which detect rotational movements of the head, and the otolith organs (the saccule and utricle), which detect linear acceleration and gravity.
Damage to the inner ear can result in hearing loss, tinnitus (ringing in the ears), vertigo (a spinning sensation), and balance problems.
Scala Vestibuli is a term used in anatomy, particularly in the field of otology (the study of the ear and its diseases). It refers to one of the three bony canals that make up the inner ear's complex system of fluid-filled channels known as the vestibular system.
More specifically, Scala Vestibuli is the uppermost of the three scalae (singular: scala) in the cochlea, a snail-shaped structure in the inner ear responsible for hearing. The other two scalae are Scala Tympani and Scala Media.
Scala Vestibuli and Scala Tympani are connected at the apex of the cochlea through an opening called the helicotrema. The Scala Vestibuli is filled with perilymph, a fluid that helps transmit sound waves to the inner ear.
Please note that while I strive to provide accurate and detailed information, it's always best to consult with a healthcare professional or medical textbook for definitive medical definitions and explanations.
Bone conduction is a type of hearing mechanism that involves the transmission of sound vibrations directly to the inner ear through the bones of the skull, bypassing the outer and middle ears. This occurs when sound waves cause the bones in the skull to vibrate, stimulating the cochlea (the spiral cavity of the inner ear) and its hair cells, which convert the mechanical energy of the vibrations into electrical signals that are sent to the brain and interpreted as sound.
Bone conduction is a natural part of the hearing process in humans, but it can also be used artificially through the use of bone-conduction devices, such as hearing aids or headphones, which transmit sound vibrations directly to the skull. This type of transmission can provide improved hearing for individuals with conductive hearing loss, mixed hearing loss, or single-sided deafness, as it bypasses damaged or obstructed outer and middle ears.
Ear diseases are medical conditions that affect the ear and its various components, including the outer ear, middle ear, and inner ear. These diseases can cause a range of symptoms, such as hearing loss, tinnitus (ringing in the ears), vertigo (dizziness), ear pain, and discharge. Some common ear diseases include:
1. Otitis externa (swimmer's ear) - an infection or inflammation of the outer ear and ear canal.
2. Otitis media - an infection or inflammation of the middle ear, often caused by a cold or flu.
3. Cholesteatoma - a skin growth that develops in the middle ear behind the eardrum.
4. Meniere's disease - a disorder of the inner ear that can cause vertigo, hearing loss, and tinnitus.
5. Temporomandibular joint (TMJ) disorders - problems with the joint that connects the jawbone to the skull, which can cause ear pain and other symptoms.
6. Acoustic neuroma - a noncancerous tumor that grows on the nerve that connects the inner ear to the brain.
7. Presbycusis - age-related hearing loss.
Treatment for ear diseases varies depending on the specific condition and its severity. It may include medication, surgery, or other therapies. If you are experiencing symptoms of an ear disease, it is important to seek medical attention from a healthcare professional, such as an otolaryngologist (ear, nose, and throat specialist).
The spinal canal is the bony, protective channel within the vertebral column that contains and houses the spinal cord. It extends from the foramen magnum at the base of the skull to the sacrum, where the spinal cord ends and forms the cauda equina. The spinal canal is formed by a series of vertebral bodies stacked on top of each other, intervertebral discs in between them, and the laminae and spinous processes that form the posterior elements of the vertebrae. The spinal canal provides protection to the spinal cord from external trauma and contains cerebrospinal fluid (CSF) that circulates around the cord, providing nutrients and cushioning. Any narrowing or compression of the spinal canal, known as spinal stenosis, can cause various neurological symptoms due to pressure on the spinal cord or nerve roots.
The ear ossicles are the three smallest bones in the human body, which are located in the middle ear. They play a crucial role in the process of hearing by transmitting and amplifying sound vibrations from the eardrum to the inner ear. The three ear ossicles are:
1. Malleus (hammer): The largest of the three bones, it is shaped like a hammer and connects to the eardrum.
2. Incus (anvil): The middle-sized bone, it looks like an anvil and connects the malleus to the stapes.
3. Stapes (stirrup): The smallest and lightest bone in the human body, it resembles a stirrup and transmits vibrations from the incus to the inner ear.
Together, these tiny bones work to efficiently transfer sound waves from the air to the fluid-filled cochlea of the inner ear, enabling us to hear.
Spontaneous otoacoustic emissions (SOAEs) are low-level sounds that are produced by the inner ear (cochlea) without any external stimulation. They can be recorded in a quiet room using specialized microphones placed inside the ear canal. SOAEs are thought to arise from the motion of the hair cells within the cochlea, which generate tiny currents in response to sound. These currents then cause the surrounding fluid and tissue to vibrate, producing sound waves that can be detected with a microphone.
SOAEs are typically present in individuals with normal hearing, although their presence or absence is not a definitive indicator of hearing ability. They tend to occur at specific frequencies and can vary from person to person. In some cases, SOAEs may be absent or reduced in individuals with hearing loss or damage to the hair cells in the cochlea.
It's worth noting that SOAEs are different from evoked otoacoustic emissions (EOAEs), which are sounds produced by the inner ear in response to external stimuli, such as clicks or tones. Both types of otoacoustic emissions are used in hearing tests and research to assess cochlear function and health.
Root canal preparation is a procedure in endodontics, which is the branch of dentistry dealing with the dental pulp and tissues surrounding the root of a tooth. The goal of root canal preparation is to thoroughly clean, shape, and disinfect the root canal system of an infected or damaged tooth, in order to prepare it for a filling material that will seal and protect the tooth from further infection or damage.
The procedure involves the use of specialized dental instruments, such as files and reamers, to remove the infected or necrotic pulp tissue and debris from within the root canal. The root canal is then shaped using progressively larger files to create a tapering preparation that facilitates the placement of the filling material. Irrigation solutions are used to help flush out any remaining debris and disinfect the canal.
The success of root canal preparation depends on several factors, including the thoroughness of cleaning and shaping, the effectiveness of disinfection, and the sealing ability of the filling material. Properly performed, root canal preparation can alleviate pain, save a tooth from extraction, and restore function and aesthetics to the mouth.
The round window ( membrana tympani rotunda) is a small, thin membrane-covered opening located in the inner ear between the middle ear and the cochlea. It serves as one of the two openings that lead into the cochlea, with the other being the oval window.
The round window's primary function is to help regulate and dampen the pressure changes within the cochlea that occur when sound waves reach the inner ear. This is accomplished through the movement of the fluid-filled spaces inside the cochlea (the scala vestibuli and scala tympani) caused by vibrations from the stapes bone, which connects to the oval window.
As the stapes bone moves in response to sound waves, it causes a corresponding motion in the perilymph fluid within the cochlea. This movement then creates pressure changes at the round window, causing it to bulge outward or move inward. The flexibility of the round window allows it to absorb and dissipate these pressure changes, which helps protect the delicate structures inside the inner ear from damage due to excessive pressure buildup.
It is important to note that any damage or dysfunction in the round window can negatively impact hearing ability and cause various hearing disorders.
Mite infestations refer to the presence and multiplication of mites, which are tiny arthropods belonging to the class Arachnida, on or inside a host's body. This can occur in various sites such as the skin, lungs, or gastrointestinal tract, depending on the specific mite species.
Skin infestations by mites, also known as dermatophilosis or mange, are common and may cause conditions like scabies (caused by Sarcoptes scabiei) or demodecosis (caused by Demodex spp.). These conditions can lead to symptoms such as itching, rash, and skin lesions.
Lung infestations by mites, although rare, can occur in people who work in close contact with mites, such as farmers or laboratory workers. This condition is called "mite lung" or "farmer's lung," which is often caused by exposure to high levels of dust containing mite feces and dead mites.
Gastrointestinal infestations by mites can occur in animals but are extremely rare in humans. The most common example is the intestinal roundworm, which belongs to the phylum Nematoda rather than Arachnida.
It's important to note that mite infestations can be treated with appropriate medical interventions and prevention measures.
Acoustics is a branch of physics that deals with the study of sound, its production, transmission, and effects. In a medical context, acoustics may refer to the use of sound waves in medical procedures such as:
1. Diagnostic ultrasound: This technique uses high-frequency sound waves to create images of internal organs and tissues. It is commonly used during pregnancy to monitor fetal development, but it can also be used to diagnose a variety of medical conditions, including heart disease, cancer, and musculoskeletal injuries.
2. Therapeutic ultrasound: This technique uses low-frequency sound waves to promote healing and reduce pain and inflammation in muscles, tendons, and ligaments. It is often used to treat soft tissue injuries, arthritis, and other musculoskeletal conditions.
3. Otology: Acoustics also plays a crucial role in the field of otology, which deals with the study and treatment of hearing and balance disorders. The shape, size, and movement of the outer ear, middle ear, and inner ear all affect how sound waves are transmitted and perceived. Abnormalities in any of these structures can lead to hearing loss, tinnitus, or balance problems.
In summary, acoustics is an important field of study in medicine that has applications in diagnosis, therapy, and the understanding of various medical conditions related to sound and hearing.
The incus, also known as the anvil, is one of the three smallest bones in the middle ear, located in the ossicular chain. It articulates with the malleus (hammer) and stapes (stirrup). The incus helps transmit and amplify sound vibrations from the eardrum to the inner ear.
Ear protective devices are types of personal protective equipment designed to protect the ears from potential damage or injury caused by excessive noise or pressure changes. These devices typically come in two main forms: earplugs and earmuffs.
Earplugs are small disposable or reusable plugs that are inserted into the ear canal to block out or reduce loud noises. They can be made of foam, rubber, plastic, or other materials and are available in different sizes to fit various ear shapes and sizes.
Earmuffs, on the other hand, are headbands with cups that cover the entire outer ear. The cups are typically made of sound-absorbing materials such as foam or fluid-filled cushions that help to block out noise. Earmuffs can be used in combination with earplugs for added protection.
Both earplugs and earmuffs are commonly used in industrial settings, construction sites, concerts, shooting ranges, and other noisy environments to prevent hearing loss or damage. It is important to choose the right type of ear protective device based on the level and type of noise exposure, as well as individual comfort and fit.
The cochlea is a part of the inner ear that is responsible for hearing. It is a spiral-shaped structure that looks like a snail shell and is filled with fluid. The cochlea contains hair cells, which are specialized sensory cells that convert sound vibrations into electrical signals that are sent to the brain.
The cochlea has three main parts: the vestibular canal, the tympanic canal, and the cochlear duct. Sound waves enter the inner ear and cause the fluid in the cochlea to move, which in turn causes the hair cells to bend. This bending motion stimulates the hair cells to generate electrical signals that are sent to the brain via the auditory nerve.
The brain then interprets these signals as sound, allowing us to hear and understand speech, music, and other sounds in our environment. Damage to the hair cells or other structures in the cochlea can lead to hearing loss or deafness.
Ear neoplasms refer to abnormal growths or tumors that occur in the ear. These growths can be benign (non-cancerous) or malignant (cancerous) and can affect any part of the ear, including the outer ear, middle ear, inner ear, and the ear canal.
Benign ear neoplasms are typically slow-growing and do not spread to other parts of the body. Examples include exostoses, osteomas, and ceruminous adenomas. These types of growths are usually removed surgically for cosmetic reasons or if they cause discomfort or hearing problems.
Malignant ear neoplasms, on the other hand, can be aggressive and may spread to other parts of the body. Examples include squamous cell carcinoma, basal cell carcinoma, and adenoid cystic carcinoma. These types of tumors often require more extensive treatment, such as surgery, radiation therapy, and chemotherapy.
It is important to note that any new growth or change in the ear should be evaluated by a healthcare professional to determine the nature of the growth and develop an appropriate treatment plan.
Tympanic membrane perforation, also known as a ruptured eardrum, is a tear or hole in the tympanic membrane, which separates the outer ear canal and the middle ear. The tympanic membrane plays a crucial role in hearing by transmitting sound vibrations from the outer ear to the inner ear. A perforation can result from various causes such as infection, trauma, pressure changes, or explosive blasts, leading to symptoms like hearing loss, tinnitus, vertigo, and ear discharge. The extent and location of the perforation determine the severity of the symptoms and the course of treatment, which may include observation, antibiotics, or surgical repair.
Conductive hearing loss is a type of hearing loss that occurs when there is a problem with the outer or middle ear. Sound waves are not able to transmit efficiently through the ear canal to the eardrum and the small bones in the middle ear, resulting in a reduction of sound that reaches the inner ear. Causes of conductive hearing loss may include earwax buildup, fluid in the middle ear, a middle ear infection, a hole in the eardrum, or problems with the tiny bones in the middle ear. This type of hearing loss can often be treated through medical intervention or surgery.
Perceptual distortion is not explicitly defined within the realm of medicine, but it does fall under the broader category of cognitive impairments and abnormalities. It generally refers to the incorrect interpretation or misrepresentation of sensory information by the brain. This can result in various experiences such as hallucinations, illusions, or distorted perceptions of reality. Perceptual distortions are often associated with certain medical conditions like mental disorders (e.g., schizophrenia, bipolar disorder), neurological disorders (e.g., migraines, epilepsy), and substance use disorders.
Otoscopy is a medical examination procedure used to evaluate the external auditory canal and tympanic membrane (eardrum). It involves the use of an otoscope, a tool that consists of a lighted speculum attached to a handle. The speculum is inserted into the ear canal, allowing the healthcare provider to visualize and inspect the eardrum for any abnormalities such as perforations, inflammation, fluid accumulation, or foreign bodies. Otoscopy can help diagnose various conditions including ear infections, middle ear disorders, and hearing loss.
Hearing is the ability to perceive sounds by detecting vibrations in the air or other mediums and translating them into nerve impulses that are sent to the brain for interpretation. In medical terms, hearing is defined as the sense of sound perception, which is mediated by the ear and interpreted by the brain. It involves a complex series of processes, including the conduction of sound waves through the outer ear to the eardrum, the vibration of the middle ear bones, and the movement of fluid in the inner ear, which stimulates hair cells to send electrical signals to the auditory nerve and ultimately to the brain. Hearing allows us to communicate with others, appreciate music and sounds, and detect danger or important events in our environment.
Root canal irrigants are substances used during root canal treatment to clean, disinfect and rinse the root canal system. The main goal is to remove tissue remnants, dentinal debris, and microorganisms from the root canal space, thus reducing the risk of reinfection and promoting healing. Commonly used irrigants include sodium hypochlorite (NaOCl), which is a potent antimicrobial agent, and ethylenediaminetetraacetic acid (EDTA), which is used to remove the smear layer and improve the penetration of other irrigants and root canal sealers. The choice of irrigant, concentration, and application technique may vary depending on the specific case and clinician's preference.
The dental pulp cavity, also known as the pulp chamber, is the innermost part of a tooth that contains the dental pulp. It is located in the crown portion of the tooth and is shaped like an upside-down pyramid with the narrow end point towards the root of the tooth.
The dental pulp is a soft tissue that contains nerves, blood vessels, and connective tissue. It plays an important role in the development and maintenance of the tooth, including providing nutrients to the dentin and producing reparative dentin.
The dental pulp cavity can become infected or inflamed due to tooth decay, trauma, or other factors, leading to symptoms such as pain, sensitivity, and swelling. In such cases, treatment options may include root canal therapy, which involves removing the infected or inflamed pulp tissue from the dental pulp cavity and sealing the space to prevent further infection.
The Malleus is one of the three smallest bones in the human body, also known as the hammer. It's part of the ossicles in the middle ear, which are responsible for transmitting sound waves from the air to the fluid-filled inner ear. The malleus connects to the eardrum and its base articulates with the incus (anvil), the second of the three ossicles. Together, these bones help amplify and transfer sound vibrations to the inner ear, where they are converted into electrical signals that can be interpreted by the brain as sound.
The temporal bone is a paired bone that is located on each side of the skull, forming part of the lateral and inferior walls of the cranial cavity. It is one of the most complex bones in the human body and has several important structures associated with it. The main functions of the temporal bone include protecting the middle and inner ear, providing attachment for various muscles of the head and neck, and forming part of the base of the skull.
The temporal bone is divided into several parts, including the squamous part, the petrous part, the tympanic part, and the styloid process. The squamous part forms the lateral portion of the temporal bone and articulates with the parietal bone. The petrous part is the most medial and superior portion of the temporal bone and contains the inner ear and the semicircular canals. The tympanic part forms the lower and anterior portions of the temporal bone and includes the external auditory meatus or ear canal. The styloid process is a long, slender projection that extends downward from the inferior aspect of the temporal bone and serves as an attachment site for various muscles and ligaments.
The temporal bone plays a crucial role in hearing and balance, as it contains the structures of the middle and inner ear, including the oval window, round window, cochlea, vestibule, and semicircular canals. The stapes bone, one of the three bones in the middle ear, is entirely encased within the petrous portion of the temporal bone. Additionally, the temporal bone contains important structures for facial expression and sensation, including the facial nerve, which exits the skull through the stylomastoid foramen, a small opening in the temporal bone.
The basilar membrane is a key structure within the inner ear that plays a crucial role in hearing. It is a narrow, flexible strip of tissue located inside the cochlea, which is the spiral-shaped organ responsible for converting sound waves into neural signals that can be interpreted by the brain.
The basilar membrane runs along the length of the cochlea's duct and is attached to the rigid bony structures at both ends. It varies in width and stiffness along its length, with the widest and most flexible portion located near the entrance of the cochlea and the narrowest and stiffest portion located near the apex.
When sound waves enter the inner ear, they cause vibrations in the fluid-filled cochlear duct. These vibrations are transmitted to the basilar membrane, causing it to flex up and down. The specific pattern of flexion along the length of the basilar membrane depends on the frequency of the sound wave. Higher frequency sounds cause maximum flexion near the base of the cochlea, while lower frequency sounds cause maximum flexion near the apex.
As the basilar membrane flexes, it causes the attached hair cells to bend. This bending stimulates the hair cells to release neurotransmitters, which then activate the auditory nerve fibers. The pattern of neural activity in the auditory nerve encodes the frequency and amplitude of the sound wave, allowing the brain to interpret the sound.
Overall, the basilar membrane is a critical component of the hearing process, enabling us to detect and discriminate different sounds based on their frequency and amplitude.
Audiology is a branch of science that deals with the study of hearing, balance disorders, and related conditions. It involves the assessment, diagnosis, and treatment of hearing and balance problems using various tests, techniques, and devices. Audiologists are healthcare professionals who specialize in this field and provide services such as hearing evaluations, fitting of hearing aids, and counseling for people with hearing loss or tinnitus (ringing in the ears). They also work closely with other medical professionals to manage complex cases and provide rehabilitation services.
Root canal filling materials are substances used to fill and seal the root canal system inside a tooth following root canal treatment. The main goal of using these materials is to prevent reinfection, provide structural support to the weakened tooth, and restore its functionality.
Commonly used root canal filling materials include:
1. Gutta-percha: A rubber-like material derived from the sap of the Palaquium gutta tree. It is widely used as the primary filling material due to its biocompatibility, malleability, and ability to be compacted into the root canal space. Gutta-percha points or cones are typically used in conjunction with a sealer for optimal adaptation and seal.
2. Sealers: These are adhesive materials that help bond gutta-percha to dentin walls and improve the seal between the filling material and root canal walls. Some commonly used sealers include zinc oxide eugenol, calcium hydroxide-based sealers, and resin-based sealers.
3. Silver points: These are silver cones with a sharp tip that can be inserted into the root canal space as an alternative to gutta-percha. However, their use has declined due to concerns about corrosion and potential tooth discoloration.
4. Mineral trioxide aggregate (MTA): A biocompatible cement composed primarily of Portland cement, bismuth oxide, and other additives. MTA is used for various applications in endodontics, including root-end filling, perforation repair, and apexification. It has excellent sealing ability, antibacterial properties, and promotes hard tissue formation.
5. Bioceramics: These are advanced materials with similar properties to MTA but with improved handling characteristics and setting times. They include materials like Bioaggregate, EndoSequence BC Sealer, and iRoot SP.
6. Thermoplasticized gutta-percha: This technique involves heating and softening gutta-percha using a specialized device called a thermomechanical compactor or an oven. The softened gutta-percha is then injected into the root canal space, providing better adaptation to the root canal walls and creating a more uniform seal.
The choice of materials depends on various factors, including the clinical situation, patient's needs, and practitioner's preference.
In medical terms, pressure is defined as the force applied per unit area on an object or body surface. It is often measured in millimeters of mercury (mmHg) in clinical settings. For example, blood pressure is the force exerted by circulating blood on the walls of the arteries and is recorded as two numbers: systolic pressure (when the heart beats and pushes blood out) and diastolic pressure (when the heart rests between beats).
Pressure can also refer to the pressure exerted on a wound or incision to help control bleeding, or the pressure inside the skull or spinal canal. High or low pressure in different body systems can indicate various medical conditions and require appropriate treatment.
Otitis media with effusion (OME), also known as serous otitis media or glue ear, is a medical condition characterized by the presence of fluid in the middle ear without signs or symptoms of acute ear infection. The fluid accumulation occurs due to the dysfunction of the Eustachian tube, which results in negative pressure and subsequent accumulation of sterile fluid within the middle ear space.
OME can lead to hearing difficulties, especially in children, as the fluid buildup impairs sound conduction through the ossicles in the middle ear. Symptoms may include mild hearing loss, tinnitus (ringing in the ears), and a sensation of fullness or pressure in the affected ear. In some cases, OME can resolve on its own within a few weeks or months; however, persistent cases might require medical intervention, such as placement of tympanostomy tubes (ear tubes) to drain the fluid and restore hearing.
Benzethonium is an antimicrobial agent used as a preservative in some pharmaceutical and cosmetic products. It has broad-spectrum activity against gram-positive and gram-negative bacteria, fungi, and viruses. The chemical name for benzethonium chloride is N'-(1-benzyl-4-phenoxypyridinio) decane methosulfate.
Benzethonium chloride is commonly used as a topical antiseptic in products such as skin cleansers, hand sanitizers, and first aid treatments. It works by disrupting the bacterial cell membrane, leading to the death of the microorganism. However, it may not be effective against some spores and highly resistant bacteria.
It is important to note that benzethonium chloride should be used according to the instructions on the product label and should not be ingested or used in the eyes or mucous membranes unless specifically directed by a healthcare professional.
Sound spectrography, also known as voice spectrography, is a diagnostic procedure in which a person's speech sounds are analyzed and displayed as a visual pattern called a spectrogram. This test is used to evaluate voice disorders, speech disorders, and hearing problems. It can help identify patterns of sound production and reveal any abnormalities in the vocal tract or hearing mechanism.
During the test, a person is asked to produce specific sounds or sentences, which are then recorded and analyzed by a computer program. The program breaks down the sound waves into their individual frequencies and amplitudes, and displays them as a series of horizontal lines on a graph. The resulting spectrogram shows how the frequencies and amplitudes change over time, providing valuable information about the person's speech patterns and any underlying problems.
Sound spectrography is a useful tool for diagnosing and treating voice and speech disorders, as well as for researching the acoustic properties of human speech. It can also be used to evaluate hearing aids and other assistive listening devices, and to assess the effectiveness of various treatments for hearing loss and other auditory disorders.
The auditory threshold is the minimum sound intensity or loudness level that a person can detect 50% of the time, for a given tone frequency. It is typically measured in decibels (dB) and represents the quietest sound that a person can hear. The auditory threshold can be affected by various factors such as age, exposure to noise, and certain medical conditions. Hearing tests, such as pure-tone audiometry, are used to measure an individual's auditory thresholds for different frequencies.
Malassezia is a genus of fungi (specifically, yeasts) that are commonly found on the skin surfaces of humans and other animals. They are part of the normal flora of the skin, but under certain conditions, they can cause various skin disorders such as dandruff, seborrheic dermatitis, pityriasis versicolor, and atopic dermatitis.
Malassezia species require lipids for growth, and they are able to break down the lipids present in human sebum into fatty acids, which can cause irritation and inflammation of the skin. Malassezia is also associated with fungal infections in people with weakened immune systems.
The genus Malassezia includes several species, such as M. furfur, M. globosa, M. restricta, M. sympodialis, and others. These species can be identified using various laboratory methods, including microscopy, culture, and molecular techniques.
Acoustic stimulation refers to the use of sound waves or vibrations to elicit a response in an individual, typically for the purpose of assessing or treating hearing, balance, or neurological disorders. In a medical context, acoustic stimulation may involve presenting pure tones, speech sounds, or other types of auditory signals through headphones, speakers, or specialized devices such as bone conduction transducers.
The response to acoustic stimulation can be measured using various techniques, including electrophysiological tests like auditory brainstem responses (ABRs) or otoacoustic emissions (OAEs), behavioral observations, or functional imaging methods like fMRI. Acoustic stimulation is also used in therapeutic settings, such as auditory training programs for hearing impairment or vestibular rehabilitation for balance disorders.
It's important to note that acoustic stimulation should be administered under the guidance of a qualified healthcare professional to ensure safety and effectiveness.
Cochlear microphonic potentials (CMs) are electrical responses that originate from the hair cells in the cochlea, which is a part of the inner ear responsible for hearing. These potentials can be recorded using an electrode placed near the cochlea in response to sound stimulation.
The CMs are considered to be a passive response of the hair cells to the mechanical deflection caused by sound waves. They represent the receptor potential of the outer hair cells and are directly proportional to the sound pressure level. Unlike other electrical responses in the cochlea, such as the action potentials generated by the auditory nerve fibers, CMs do not require the presence of neurotransmitters or synaptic transmission.
Cochlear microphonic potentials have been used in research to study the biophysical properties of hair cells and their response to different types of sound stimuli. However, they are not typically used in clinical audiology due to their small amplitude and susceptibility to interference from other electrical signals in the body.
Audiometry is the testing of a person's ability to hear different sounds, pitches, or frequencies. It is typically conducted using an audiometer, a device that emits tones at varying volumes and frequencies. The person being tested wears headphones and indicates when they can hear the tone by pressing a button or raising their hand.
There are two main types of audiometry: pure-tone audiometry and speech audiometry. Pure-tone audiometry measures a person's ability to hear different frequencies at varying volumes, while speech audiometry measures a person's ability to understand spoken words at different volumes and in the presence of background noise.
The results of an audiometry test are typically plotted on an audiogram, which shows the quietest sounds that a person can hear at different frequencies. This information can be used to diagnose hearing loss, determine its cause, and develop a treatment plan.
Gerbillinae is a subfamily of rodents that includes gerbils, jirds, and sand rats. These small mammals are primarily found in arid regions of Africa and Asia. They are characterized by their long hind legs, which they use for hopping, and their long, thin tails. Some species have adapted to desert environments by developing specialized kidneys that allow them to survive on minimal water intake.
Psoroptidae is a family of mites that are primarily parasites of mammals, including sheep, goats, cattle, and horses. The most common species in this family is Psoroptes ovis, also known as the sheep scab mite. These mites cause a condition called psoroptic mange or sheep scab, which is characterized by intense itching, scratching, and the formation of crusty lesions on the skin. The mites feed on skin cells and bodily fluids, leading to significant discomfort and potential secondary infections in their hosts. Psoroptic mange is a highly contagious condition that can spread rapidly among animals in close contact.
Pure-tone audiometry is a hearing test that measures a person's ability to hear different sounds, pitches, or frequencies. During the test, pure tones are presented to the patient through headphones or ear inserts, and the patient is asked to indicate each time they hear the sound by raising their hand, pressing a button, or responding verbally.
The softest sound that the person can hear at each frequency is recorded as the hearing threshold, and a graph called an audiogram is created to show the results. The audiogram provides information about the type and degree of hearing loss in each ear. Pure-tone audiometry is a standard hearing test used to diagnose and monitor hearing disorders.
Disarticulation is a medical term that refers to the separation or dislocation of a joint. It can occur as a result of trauma, disease, or surgical intervention. In some cases, disarticulation may be necessary to relieve pain or improve mobility in a damaged joint. In forensic medicine, disarticulation is used to describe the postmortem separation of body parts at the joints, which can occur naturally in advanced decomposition or as a result of scavenging by animals.
Hearing aids are electronic devices designed to improve hearing and speech comprehension for individuals with hearing loss. They consist of a microphone, an amplifier, a speaker, and a battery. The microphone picks up sounds from the environment, the amplifier increases the volume of these sounds, and the speaker sends the amplified sound into the ear. Modern hearing aids often include additional features such as noise reduction, directional microphones, and wireless connectivity to smartphones or other devices. They are programmed to meet the specific needs of the user's hearing loss and can be adjusted for comfort and effectiveness. Hearing aids are available in various styles, including behind-the-ear (BTE), receiver-in-canal (RIC), in-the-ear (ITE), and completely-in-canal (CIC).
The anal canal is the terminal portion of the digestive tract, located between the rectum and the anus. It is a short tube-like structure that is about 1 to 1.5 inches long in adults. The main function of the anal canal is to provide a seal for the elimination of feces from the body while also preventing the leakage of intestinal contents.
The inner lining of the anal canal is called the mucosa, which is kept moist by the production of mucus. The walls of the anal canal contain specialized muscles that help control the passage of stool during bowel movements. These muscles include the internal and external sphincters, which work together to maintain continence and allow for the voluntary release of feces.
The anal canal is an important part of the digestive system and plays a critical role in maintaining bowel function and overall health.
Mites are tiny arthropods belonging to the class Arachnida, which also includes spiders and ticks. They are characterized by their small size, usually measuring less than 1 mm in length, and their lack of obvious segmentation on their bodies. Many mites are parasitic, feeding on the skin cells, blood, or fluids of plants and animals, including humans. Some common mite infestations in humans include scabies, caused by the itch mite (Sarcoptes scabiei), and dust mites (e.g., Dermatophagoides pteronyssinus and D. farinae), which are commonly found in household dust and can cause allergic reactions in some people. It's worth noting that the majority of mites are not harmful to humans and play important roles in ecosystems as decomposers and predators.
Otitis media is an inflammation or infection of the middle ear. It can occur as a result of a cold, respiratory infection, or allergy that causes fluid buildup behind the eardrum. The buildup of fluid can lead to infection and irritation of the middle ear, causing symptoms such as ear pain, hearing loss, and difficulty balancing. There are two types of otitis media: acute otitis media (AOM), which is a short-term infection that can cause fever and severe ear pain, and otitis media with effusion (OME), which is fluid buildup in the middle ear without symptoms of infection. In some cases, otitis media may require medical treatment, including antibiotics or the placement of ear tubes to drain the fluid and relieve pressure on the eardrum.
The tooth apex is the tip or the narrowed end of the root of a tooth. It is the portion that is located deepest within the jawbone and it contains dental pulp tissue, which includes nerves and blood vessels. The apex plays an essential role in the development and maintenance of a tooth, as well as in the process of root canal treatment, where instruments and materials are introduced through it to clean and fill the root canals. It is also a crucial landmark in endodontic surgery and dental imaging.
Pitch perception is the ability to identify and discriminate different frequencies or musical notes. It is the way our auditory system interprets and organizes sounds based on their highness or lowness, which is determined by the frequency of the sound waves. A higher pitch corresponds to a higher frequency, while a lower pitch corresponds to a lower frequency. Pitch perception is an important aspect of hearing and is crucial for understanding speech, enjoying music, and localizing sounds in our environment. It involves complex processing in the inner ear and auditory nervous system.
Dermatomycoses are a group of fungal infections that affect the skin, hair, and nails. These infections are caused by various types of fungi, including dermatophytes, yeasts, and molds. Dermatophyte infections, also known as tinea, are the most common type of dermatomycoses and can affect different areas of the body, such as the scalp (tinea capitis), beard (tinea barbae), body (tinea corporis), feet (tinea pedis or athlete's foot), hands (tinea manuum), and nails (tinea unguium or onychomycosis). Yeast infections, such as those caused by Candida albicans, can lead to conditions like candidal intertrigo, vulvovaginitis, and balanitis. Mold infections are less common but can cause skin disorders like scalded skin syndrome and phaeohyphomycosis. Dermatomycoses are typically treated with topical or oral antifungal medications.
Psychoacoustics is a branch of psychophysics that deals with the study of the psychological and physiological responses to sound. It involves understanding how people perceive, interpret, and react to different sounds, including speech, music, and environmental noises. This field combines knowledge from various areas such as psychology, acoustics, physics, and engineering to investigate the relationship between physical sound characteristics and human perception. Research in psychoacoustics has applications in fields like hearing aid design, noise control, music perception, and communication systems.
In the context of medicine and physiology, vibration refers to the mechanical oscillation of a physical body or substance with a periodic back-and-forth motion around an equilibrium point. This motion can be produced by external forces or internal processes within the body.
Vibration is often measured in terms of frequency (the number of cycles per second) and amplitude (the maximum displacement from the equilibrium position). In clinical settings, vibration perception tests are used to assess peripheral nerve function and diagnose conditions such as neuropathy.
Prolonged exposure to whole-body vibration or hand-transmitted vibration in certain occupational settings can also have adverse health effects, including hearing loss, musculoskeletal disorders, and vascular damage.
The ear auricle, also known as the pinna or outer ear, is the visible external structure of the ear that serves to collect and direct sound waves into the ear canal. It is composed of cartilage and skin and is shaped like a curved funnel. The ear auricle consists of several parts including the helix (the outer rim), antihelix (the inner curved prominence), tragus and antitragus (the small pointed eminences in front of and behind the ear canal opening), concha (the bowl-shaped area that directs sound into the ear canal), and lobule (the fleshy lower part hanging from the ear).
Ear canal
Cauliflower ear
Ear hair
Ear
Outer ear
Ear picking
Ear pain
Christopher Walken
In-ear monitor
Ear drop
Microphonics
Auricular hypertrichosis
Earwax
Ear mite
Ear instillation
Red-eared slider
Ceruminous adenoma
Dog odor
Surfer's ear
Timurlengia
Harbor seal
Topographic map (neuroanatomy)
Ear tuft
Hart Memorial Park
Marsh mongoose
Aspergillosis
Substances poisonous to dogs
Earless water rat
Rabbit
Acrophyseter
Face and neck development of the human embryo
Ear canal - Wikipedia
Doctors remove spider hiding in woman's ear canal
Ear Canal
Cockroaches Do Get into Ear Canals! - Colonial Pest Control
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Boil in Ear Canal - 𝗗𝗜𝗔𝗚𝗡𝗢𝗦𝗜𝗦 𝟭𝟮𝟯
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RiderBuds: Earbuds that disappear in your ear canal - Inceptive Mind
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Prevention of External Ear Canal Inflammation: Is it Possible? - Fitlifewarrior.com
Aron Trimble, - Engadget
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Eardrum14
- The adult human ear canal extends from the pinna to the eardrum and is about 2.5 centimetres (1 in) in length and 0.7 centimetres (0.3 in) in diameter. (wikipedia.org)
- Excess or impacted cerumen can press against the eardrum and/or occlude the external auditory canal and impair hearing, causing conductive hearing loss. (wikipedia.org)
- The inch-long pathway leading from the outer ear to the eardrum. (hearinglosshelp.com)
- The ear canal produces cerumen (ear wax) and contains hairs that prevent bacteria and foreign objects from reaching the eardrum. (hearinglosshelp.com)
- The ear canal is the tube that connects the outside of your ear to your eardrum. (msdmanuals.com)
- You can get a referral to an ear-nose-throat doctor if you have a disease of the middle ear or are operating in the eardrum. (zeepedia.com)
- An otoscope provides a view of the ear canal and eardrum. (v-medtech.com)
- Since the eardrum is the boundary between the external auditory canal and the middle ear, its properties can indicate various diseases of the middle ear space. (v-medtech.com)
- The occurrence of wax, flaky skin, pus, skin edema in the canal, foreign bodies and various ear diseases can impair the view of the eardrum and thus significantly impair the value of otoscopy performed with a conventional otoscope. (v-medtech.com)
- This is the path that connects your ears outside to your eardrum. (medrot.com)
- It does not need to pass through the external auditory canal and eardrum, but directly passes through the bone labyrinth to transmit sound waves to the auditory center, thereby minimizing the damage to the ear canal. (wissonly.com)
- The ear canal is a tube that goes from the opening of the ear to the eardrum. (hopkinsmedicine.org)
- Then, they'll insert thin ventilation tubes, also known as pressure equalizing tubes or tympanostomy tubes, in one or both of your ears to drain fluid from behind the eardrum. (healthline.com)
- Your ear canal and eardrum are very delicate, and you may hurt them or cause bleeding by trying to get rid of wax this way. (kidshealth.org)
Swimmer's ear19
- Alternatively, the swollen ear canal is also known as "swimmer's ear" , as swimmers are more frequently affected with swollen ear canal due to prolonged exposure into the water 2 . (medicalfoxx.com)
- The most frequent reason for an ear canal swelling shut is a bacterial infection known as a swimmer's ear, though there are other possible causes as well. (medrot.com)
- A bacterial infection of your auditory canal is known as a swimmer's ear. (medrot.com)
- Your external ear may occasionally be affected by a swimmer's ear. (medrot.com)
- Otitis externa is the medical word for a swimmer's ear. (medrot.com)
- When moisture is trapped within your ear, a perfect environment for germs to proliferate, a swimmer's ear may develop. (medrot.com)
- The level of pain associated with a swimmer's ear can vary depending on the infection's severity. (medrot.com)
- Outer ear canal infection, also known as otitis externa or swimmer's ear, is a common condition that affects many people. (fitlifewarrior.com)
- External ear infections, also known as otitis externa or swimmer's ear, are a common condition that affects the outer ear canal. (fitlifewarrior.com)
- What is swimmer's ear? (hopkinsmedicine.org)
- Swimmer's ear (otitis externa) is a redness or swelling (inflammation), irritation, or infection of your outer ear canal. (hopkinsmedicine.org)
- Swimming in unclean water is a common cause of swimmer's ear. (hopkinsmedicine.org)
- Who is at risk for swimmer's ear? (hopkinsmedicine.org)
- The symptoms of swimmer's ear may look like other health problems. (hopkinsmedicine.org)
- How is swimmer's ear diagnosed? (hopkinsmedicine.org)
- How is swimmer's ear treated? (hopkinsmedicine.org)
- With proper treatment from a healthcare provider, swimmer's ear often clears up in 7 to 10 days. (hopkinsmedicine.org)
- What are the complications of swimmer's ear? (hopkinsmedicine.org)
- What can I do to prevent swimmer's ear? (hopkinsmedicine.org)
Itchy3
- Dermatitis of the ear canal is itchy, flaky, and swollen skin at the opening of your ear and inside your ear canal. (msdmanuals.com)
- The symptoms are usually that the ear canal becomes stingy and itchy. (zeepedia.com)
- First, it protects and moisturizes the skin of ear canal, preventing dry, itchy ears. (kidshealth.org)
Bacteria12
- It plays an important role in the human ear canal, assisting in cleaning and lubrication, and also provides some protection from bacteria, fungi, and insects. (wikipedia.org)
- The cracked skin sometimes lets bacteria into the skin of your ear canal. (msdmanuals.com)
- Auditory eczema does not infect, but in the grainy mass that sometimes forms inside the ear, there may be bacteria that infect. (zeepedia.com)
- It interferes with the natural cleaning of the ear canal and increases the risk of bacteria entering the ear. (zeepedia.com)
- It is also important to clean the insert so that no bacteria are introduced into the ear canal. (zeepedia.com)
- Different strains of bacteria can involve in the development of swollen ear canal, including Staphylococcus aureus, Pseudomonas aeruginosin etc. (medicalfoxx.com)
- Small scratches and wounds in your ear canal can become infected by bacteria. (medrot.com)
- It is caused by bacteria or fungi that enter the ear canal and cause inflammation and infection. (fitlifewarrior.com)
- 1. Keep your ears dry: Moisture in the ear canal can create a breeding ground for bacteria and fungi. (fitlifewarrior.com)
- This infection occurs when bacteria or fungi enter the ear canal and cause inflammation and irritation. (fitlifewarrior.com)
- It avoids the risk of bacteria breeding in the ear canal due to the blockage of the ear canal by in-ear headphones, and also avoids the harm caused by the friction of the ear canal because of wearing headphones for a long time. (wissonly.com)
- CD and PI were similarly able to decrease the number of bacteria on the external ear following initial preparation. (bvsalud.org)
Redness4
- The damaging of the protective film membrane inside the ear causes redness and inflammation inside the ear canal. (medicalfoxx.com)
- The symptoms of outer ear canal infection include pain, itching, redness, and discharge from the ear. (fitlifewarrior.com)
- These can include pain, itching, redness, and swelling of the outer ear, as well as discharge or drainage from the ear canal. (fitlifewarrior.com)
- It is a redness or swelling (inflammation), irritation, or infection of the outer ear canal. (hopkinsmedicine.org)
Total Ear Canal Ablation2
- Effectiveness of chlorhexidine diacetate and povidone-iodine in antiseptic preparation of the canine external ear canal prior to total ear canal ablation with bulla osteotomy procedure: A preliminary study. (bvsalud.org)
- ANIMALS OR SAMPLE POPULATION Dogs (n = 19) undergoing total ear canal ablation with bulla osteotomy (TECABO). (bvsalud.org)
Symptoms9
- What are the symptoms of dermatitis of the ear canal? (msdmanuals.com)
- Doctors use otoscopes to check for illnesses or ear symptoms during regular exams. (v-medtech.com)
- Similar symptoms may result from additional ear canal edoema factors. (medrot.com)
- You might want to hold off on calling a doctor for a few days if you have a large ear canal, slight pain, and no other symptoms. (medrot.com)
- In addition to these preventative measures, it is important to be aware of the signs and symptoms of external ear infections. (fitlifewarrior.com)
- If your symptoms worsen, it's a good idea to stop trying to clear your ears and consult your doctor. (healthline.com)
- This article will discuss the possible causes, symptoms, diagnosis, and treatment of ear eczema. (medicalnewstoday.com)
- Ear eczema causes symptoms similar to those of eczema on other parts of the body. (medicalnewstoday.com)
- The symptoms of ear eczema can also affect the area behind the ear. (medicalnewstoday.com)
Infections11
- Simple skin infections can occur in the ear canal, causing ear pain. (diagnosis123.com)
- This disease or condition affected patients have a tendency to develop infections, including the Swollen ear canal. (medicalfoxx.com)
- An ear infection may occasionally, especially in minor infections, recover on its own without any extra care. (medrot.com)
- 5. Keep your immune system strong: A strong immune system can help prevent infections, including outer ear canal infection. (fitlifewarrior.com)
- While it is not always possible to prevent external ear infections, there are several steps that can be taken to reduce the risk of developing this condition. (fitlifewarrior.com)
- One of the most important ways to prevent external ear infections is to keep the ear canal clean and dry. (fitlifewarrior.com)
- Another important step in preventing external ear infections is to avoid inserting foreign objects into the ear canal. (fitlifewarrior.com)
- Maintaining good ear hygiene is also important in preventing external ear infections. (fitlifewarrior.com)
- By maintaining good ear hygiene, avoiding activities that can introduce water into the ear canal, and seeking prompt medical attention for any signs of infection, it is possible to minimize the risk of developing external ear infections and maintain good ear health. (fitlifewarrior.com)
- Hearing is usually diminished after long-term ear infections so further hearing loss after ear ablation may not represent a dramatic change in hearing. (vin.com)
- Second, it contains special chemicals that fight off infections that could hurt the skin inside the ear canal. (kidshealth.org)
Earwax14
- The solution to cleaning earwax inside the ear canal is simple: it must not be cleaned. (justnotinnitus.com)
- The reason is that earwax self-regulates, flowing to the exterior of the ear canal, where it can be safely cleaned. (justnotinnitus.com)
- As we mentioned, if a cotton tip is used to clean the ear canal, the earwax might become impacted causing a partial block on the canal and resulting in hearing loss and tinnitus. (justnotinnitus.com)
- However, a cotton swab or soft cloth can be used for cleaning the earwax on the outer part of the ear. (justnotinnitus.com)
- The suction pulls earwax and other impurities out of the ear canal and into the hollow candle. (healthline.com)
- Scientific measurements of the ear canals before and after candling show no reduction in earwax. (healthline.com)
- In 2017 , The American Academy of Otolaryngology published updated clinical practice guidelines for earwax removal, stating, "Ear candling or ear coning is NOT a safe option for earwax removal. (healthline.com)
- Research shows that ear candling does NOT create a vacuum to suck earwax from the ear. (healthline.com)
- Earwax is made in the outer ear canal. (kidshealth.org)
- The skin in the outer ear canal has special glands that produce earwax. (kidshealth.org)
- In most people, the outer ear canal makes earwax all the time, so the canal always has enough wax in it. (kidshealth.org)
- When dust, dirt, and other things enter your ear, the earwax traps them so they can't travel any further. (kidshealth.org)
- You can wipe the outside of your ear with a washcloth but don't use a cotton swab, your finger, or anything else to poke around inside your ear to remove earwax. (kidshealth.org)
- In some kids, one or both ear canals make extra earwax. (kidshealth.org)
Inner ear9
- With a bone-anchored hearing aid, the sound in the leg is directed to the inner ear. (zeepedia.com)
- The anatomical ear is divided into three region- external ear, middle ear and inner ear. (medicalfoxx.com)
- Background: Underwater endoscopic ear surgery does not require suction and so protects the inner ear from unexpected aeration that may damage its function in the treatment of labyrinthine fistula. (elsevierpure.com)
- Conclusion: The underwater endoscopic ear surgery technique for plugging in superior canal dehiscence secures an excellent visual field and protects the inner ear from unexpected aeration. (elsevierpure.com)
- However, abnormalities of the middle and inner ear, commonly associated with the more severe degrees of microtia, should be sought, and typically require advanced imaging (CT or MRI scan), surgery, or autopsy. (cdc.gov)
- In fact, research suggests a risk of damage to the inner ear. (healthline.com)
- After a very loud event, such as a concert or football game, normal hearing usually returns within a few hours to a few days-however, repeated exposure to loud noises will eventually damage the inner ear permanently. (cdc.gov)
- The average person is born with about 16,000 hair cells within their inner ear. (cdc.gov)
- Damaged inner ear cells do not grow back. (cdc.gov)
Infection26
- If left untreated, cerumen impaction can also increase the risk of developing an infection within the ear canal. (wikipedia.org)
- It differs from a middle ear infection ( otitis media), which is an infection. (msdmanuals.com)
- Occasional eczema leads to an infection of the ear canal. (zeepedia.com)
- The infection can spread to the outer ear which then becomes red, swollen, hot and tender. (zeepedia.com)
- If you have an infection in your tooth's pulp or "pulpit" the root canal procedure is required. (ecuadororphans.org)
- Root canal treatment can also cause infection to a tooth that has been treated. (ecuadororphans.org)
- Middle ear infection causes heavy secretion and blocks the ear canal. (medicalfoxx.com)
- Moisture or fluid inside the ear canal insists to the development of the infection, as moisture provides a favorable environment for bacterial or fungal growth, which causes infection. (medicalfoxx.com)
- A minor ear infection may occasionally go away on its own in a few days. (medrot.com)
- The most typical therapy for a bacterial infection includes antibiotic ear drops and painkillers. (medrot.com)
- It's a good idea to take care to prevent getting germs or moisture in your ears to prevent infection and swelling in your ear canal. (medrot.com)
- In this article, we will discuss whether outer ear canal infection can be prevented. (fitlifewarrior.com)
- The answer is yes, outer ear canal infection can be prevented. (fitlifewarrior.com)
- 2. Avoid inserting objects into your ears: Cotton swabs, hairpins, and other objects can push wax and debris further into the ear canal, causing irritation and infection. (fitlifewarrior.com)
- This can help reduce the risk of outer ear canal infection. (fitlifewarrior.com)
- 4. Avoid using earbuds: Earbuds can cause irritation and inflammation in the ear canal, which can lead to infection. (fitlifewarrior.com)
- Therefore, it is important to avoid using earbuds, especially if you have a history of outer ear canal infection. (fitlifewarrior.com)
- In conclusion, outer ear canal infection can be prevented by following these simple tips. (fitlifewarrior.com)
- If you do develop outer ear canal infection, seek medical attention promptly to prevent complications. (fitlifewarrior.com)
- This includes cotton swabs, which can push wax and debris further into the ear canal and create an environment that is conducive to infection. (fitlifewarrior.com)
- Sometimes an ear infection is simply hopeless. (vin.com)
- This will help to see if you also have an infection in your middle ear. (hopkinsmedicine.org)
- The sample is sent to a lab to find out what is causing the ear infection. (hopkinsmedicine.org)
- Holding a warm washcloth or covered heating pad against your ear may help reduce pain if you have an ear infection . (healthline.com)
- Placing it on your face may also help ease sinus pressure in the case of a sinus infection , a condition that can lead to feelings of fullness in your ears. (healthline.com)
- Nasal steroids may be effective if your ears feel full as a result of a sinus infection . (healthline.com)
Eczema18
- I t is common for the ear canal to become dizzy and it will itch in your ear if you have ear canal eczema . (zeepedia.com)
- You may hear worse if your ear canal is blocked by eczema, swelling, fluid and skin cells. (zeepedia.com)
- When eczema in the ear canal is gone, you will hear as usual again. (zeepedia.com)
- Most people who have ear canal eczema do not need to seek care. (zeepedia.com)
- You as an adult can also try prescription-free ear spray for ear canal eczema that is available at pharmacies. (zeepedia.com)
- Allergies and eczema that sit on the outer part of the ear can spread to the ear canal. (zeepedia.com)
- For those who often have problems with ear canal eczema , a so-called bone-anchored hearing aid may be better suited than a hearing aid that is located in the ear canal. (zeepedia.com)
- To determine if you have had ear canal eczema, the doctor examines the ear. (zeepedia.com)
- They check if there is any eczema on the outside of the ear and if the outer ear is red, swollen, sore or feels warm. (zeepedia.com)
- It can make it difficult for the doctor to see if you have any other ear problems besides eczema. (zeepedia.com)
- Also, you can get a referral if the ear canal eczema comes back several times. (zeepedia.com)
- Eczema can appear anywhere on the body, including the outside of the ear or inside the ear canal. (medicalnewstoday.com)
- People should speak with their doctor when they first notice ear eczema for proper diagnosis and treatment. (medicalnewstoday.com)
- In addition, in older people, eczema on the ear may be asteatotic eczema. (medicalnewstoday.com)
- Doctors can often diagnose ear eczema with a routine physical examination. (medicalnewstoday.com)
- In most cases, a doctor can easily identify ear eczema and recommend suitable treatments. (medicalnewstoday.com)
- Ear eczema can be a chronic condition, but treatments are available that can manage the condition well. (medicalnewstoday.com)
- The treatment for people with ear eczema can also involve using home remedies and making lifestyle changes. (medicalnewstoday.com)
Irritation5
- A woman who went to China's Changsha Central Hospital complaining of itching in the left side of her head was told by doctors that the source of irritation was a spider that had been living inside her ear canal for five days. (yahoo.com)
- Made from unique breathable memory foam, Comply™ Canal Tips are activated by body heat, becoming ultra soft, reducing irritation and fatigue. (redbaronalse.com.au)
- Reduced irritation of the ear canal. (cravenclinic.co.uk)
- An ear blow could result in swelling and irritation. (medrot.com)
- Perhaps the ear canal has actually mineralized from chronic irritation. (vin.com)
Itching1
- heat in the affected ear causes hearing loss, fluid discharge, itching, pus, fever, and pain when you pull on the affected ear. (medrot.com)
Earplugs5
- RiderBuds devised with a unique Silicone and foam ear tips design which provides the same level of noise reduction found in protective earplugs. (inceptivemind.com)
- When swimming, use earplugs or a cap that fits snugly over your ears to keep water out. (medrot.com)
- 3. Wear earplugs: If you swim frequently, wear earplugs to prevent water from entering your ears. (fitlifewarrior.com)
- By keeping your ears dry, avoiding inserting objects into your ears, wearing earplugs, avoiding using earbuds, and keeping your immune system strong, you can reduce the risk of developing this condition. (fitlifewarrior.com)
- A variety of hearing protection devices are available, including formable earplugs, premolded earplugs, canal caps and ear muffs. (cdc.gov)
Pathway running from the o1
- The ear canal (external acoustic meatus, external auditory meatus, EAM) is a pathway running from the outer ear to the middle ear. (wikipedia.org)
Inflammation of the ear canal1
- Inside the ear the greasy substance is secreted and affected with seborrhoeic dermatitis, which causes inflammation of the ear canal. (medicalfoxx.com)
Discharge3
- You get a fever, you observe discharge coming from your ear, the discomfort and swelling don't go away after one to two days, and you have trouble hearing. (medrot.com)
- Infectious eczematoid dermatitis (IED): This dermatitis occurs from discharge at an infected site, such as from within an infected ear. (medicalnewstoday.com)
- C. auris was first described in 2009, after being isolated from external ear canal discharge of a patient in Japan. (cdc.gov)
Outer ear canal1
- After the wax is made, it slowly makes its way through the outer ear canal to the opening of the ear. (kidshealth.org)
Atresia4
- External auditory canal (EAC) atresia (EACA) is a rare congenital disorder. (medscape.com)
- Later, physicians used a hot iron probe to maintain canal patency after incising the atresia. (medscape.com)
- Audiogram of a 5-year-old girl with right unilateral external auditory canal atresia (EACA) is shown. (medscape.com)
- Severity - I-IV degree, based on the extent of external ear involvement and atresia of the external canal. (cdc.gov)
Cerumen2
- The cartilaginous portion of the ear canal contains small hairs and specialized sweat glands, called apocrine glands, which produce cerumen (ear wax). (wikipedia.org)
- Cerumen or secretion from external ear canal samples was cultured on modified Mycosel agar and sterile olive oil was added to the surface of the medium before specimen seeding. (unesp.br)
Keep the ear2
- Bone conduction headphones that generate sound through bone vibration can also keep the ear canal open when worn for a long time. (wissonly.com)
- A specialty ear splint can also be made to keep the ear compressed, so that the damaged ear is unable to fill thus preventing cauliflower ear. (wikipedia.org)
Weakens1
- The procedure of treating root canals weakens the structure of teeth, reducing their function. (ecuadororphans.org)
Perforations2
- Although most perforations heal spontaneously, those that persist after dry ear precautions, ototopical drops, or myringoplasty should be considered for surgical repair. (medscape.com)
- Tympanic membrane perforations can arise as sequelae of acute otitis media or chronic otitis media with or without cholesteatoma, as a complication of PE tube insertion, or as a result of barotrauma to the ear. (medscape.com)
Cotton3
- Cleaning the ears with a cotton tip is not a good idea. (justnotinnitus.com)
- A cotton swab is placed gently in your ear canal to get a sample. (hopkinsmedicine.org)
- Don't scratch or clean your ear canal with cotton swabs, your fingers, or other objects. (hopkinsmedicine.org)
Fluid3
- Then it can hurt a lot and drain fluid from the ear. (zeepedia.com)
- Improves ear fluid circulation. (cravenclinic.co.uk)
- Cauliflower ear is an irreversible condition that occurs when the external portion of the ear is hit and develops a blood clot or other collection of fluid under the perichondrium. (wikipedia.org)
External15
- External and middle ear, opened from the front. (wikipedia.org)
- in the external ear canal of cats with and without otitis. (unesp.br)
- Prevention of External Ear Canal Inflammation: Is it Possible? (fitlifewarrior.com)
- Perhaps the ear canal is so scarred and narrowed that external cleaning is a useless activity or there is an inflammatory polyp growing into the throat from the middle ear. (vin.com)
- There are already devices on the market that can be inserted into the ear, but they are too sensitive to external temperature and therefore not reliable so that's where we started from. (thebrighterside.news)
- In the early 20th century, techniques for correction of the atretic external canal have involved opening the antrum and aditus of the ear and lining the cavities with a skin graft. (medscape.com)
- Her physical examination shows a pinpoint opening at the external auditory canal (EAC) now, and this audiogram confirms improved hearing in the right ear compared to the prior audiogram (see image above). (medscape.com)
- EACA may be seen with microtia (ie, maldevelopment of the external ear). (medscape.com)
- Microtia/anotia is a congenital malformation of the ear in which the external ear (auricle) is underdeveloped and either abnormally shaped (microtia) or absent (anotia). (cdc.gov)
- The external ear canal may be atretic (absent). (cdc.gov)
- The spectrum of severity in microtia ranges from a measurably small external ear (defined as longitudinal ear length below minus two SD from the mean, or approximately 3.3 cm in the term newborn) with minimal structural abnormality, to an ear that consists of few rudimentary structures and an absent or blind-ending external ear canal. (cdc.gov)
- This article is a preliminary study to compare the ability of 0.05% chlorhexidine diacetate (CD) and 1% povidone-iodine (PI) solutions to reduce bacterial contamination on the canine external ear canal during initial patient preparation and comparison of the incidence of immediate tissue reactions. (bvsalud.org)
- The external ear of each dog was cleaned with the assigned antiseptic solution . (bvsalud.org)
- Properly diluted aqueous formulations of either antiseptic may be used for safe preparation limited to the external ear canal of dogs . (bvsalud.org)
- The outer epithelial layer is composed of stratified squamous epithelium, which is continuous with the skin of the external auditory canal. (medscape.com)
Drops3
- OTC product such as Swim-Ear ear drops or other is available in the pharmacy store. (medicalfoxx.com)
- Your provider will give you instructions on how to use ear drops. (hopkinsmedicine.org)
- Your health care provider may recommend drops to help dry your ears. (hopkinsmedicine.org)
Auditory canal2
- It is via the inner auditory canal that the facial nerve, Wrisberg's intermediate nerve, the auditory nerve and the vestibular nerves pass and the arteries supply blood to this region. (vestib.org)
- Stretching from the ear drum on the outside and the inner auditory canal on the inside, the vestibule is the middle part of the posterior bony labyrinth to which the semi-circular canals are attached. (vestib.org)
Completely-In-Canal2
- Signia Insio CIC (completely-in-canal) NX is a type of hearing aid that is designed to provide a discreet and custom-fit hearing solution. (aanviihearing.com)
- Insio are tailored to the individual shape of your Ear Canal to sit discreetly inside your ear canal.Signia Insio CIC (completely-in-canal) NX is a ty. (aanviihearing.com)
Flaky1
- The skin around the ear can become dry and flaky as a reaction to changes in temperature, humidity, over-washing, and other environmental factors. (medicalnewstoday.com)
Human ear canal2
- The human ear canal is divided into two parts. (wikipedia.org)
- We realized a device that directly plugs into the human ear canal and can also measure the OAE velocity field. (torvergata.it)
Receiver-In-Canal4
- How do I insert my Receiver-In-Canal with ear moulds hearing aid? (specsavers.co.nz)
- Follow our step by step video guide on how to insert your Receiver-In-Canal with ear moulds hearing aid. (specsavers.co.nz)
- Reliable and convenient, the receiver-in-canal device has a lightweight feel and a flexible fit, and it is among our most popular systems. (rockymountainearcenter.com)
- With a comfortable, open-fit design that's perfect for almost all types of hearing loss , our receiver-in-canal (RIC) devices make better hearing a breeze. (rockymountainearcenter.com)
Injury to the ear canal1
- an injury to the ear canal. (medrot.com)
Enter the ear canal1
- It allows ambient sound to enter the ear canal, and it can talk without taking off the headphones. (wissonly.com)
Doctors8
- Doctors reportedly used a saline solution to flush out the spider in order to avoid having the spider burrow deeper inside the canal or bite her. (yahoo.com)
- Doctors say they believe the spider entered the woman's home while the home was undergoing renovations, and crawled into her ear while she was sleeping. (yahoo.com)
- In one unusual case, doctors in New Orleans treated a patient with a cockroach in each ear. (colonialpest.com)
- In the other ear canal, the doctors sprayed lidocaine, an anesthetic heart drug. (colonialpest.com)
- How do doctors treat dermatitis of the ear canal? (msdmanuals.com)
- After doctors examined her, they found a yellowish mass in the ear canal. (healthline.com)
- Doctors determined that the mass was formed from candle wax that had dropped into her ear. (healthline.com)
- Doctors often can prescribe special medicines that are placed in the ear to get rid of extra wax. (kidshealth.org)
Complications1
- The FDA notes that children and babies are at increased risk of injuries and complications from ear candles. (healthline.com)
Headphones4
- Those who have sensitive skin and easily get into the ear canal should use ear protectors and headphones that sit outside the ear instead of inside the ear canal. (zeepedia.com)
- The reason for the rapid popularity of bone conduction headphones this year is that they skillfully use the solid sound transmission principle and solve the problem of "ear damage caused by wearing headphones for a long time" , which is really an annoying problem for everyone. (wissonly.com)
- Bone conduction headphones are open-ear headphones. (wissonly.com)
- Bone conduction headphones are usually worn above the ear. (wissonly.com)
Membranous Labyrinth1
- Results: Using this underwater endoscopic view, the canal was clearly dissected to expose the semicircular canal membranous labyrinth and dehiscence area. (elsevierpure.com)
Bacterial1
- Culture of the ear was performed by standard techniques to semi-quantitatively evaluate bacterial growth and to identify bacterial organisms pre- and post- antiseptic use. (bvsalud.org)
Left untreated1
- The most common cause of cauliflower ear is blunt trauma to the ear leading to a hematoma which, if left untreated, eventually heals to give the distinct appearance of cauliflower ear. (wikipedia.org)
Small ear1
- Exclude microtia type I - small ear with normal components or with minor anomalies of individual structures is a minor anomaly, not to be included in public health surveillance. (cdc.gov)
Otoscope4
- The doctor examines the ear with an otoscope, some kind of flashlight, or a microscope. (zeepedia.com)
- An otoscope is a medical device that is used to examine the inside of an ear. (v-medtech.com)
- 2.5 V Click closure LED bulb standard 2.5-times magnification metal battery handle C reusable ear funnels set Ø = 2.5/3.5/4.5/5.5/9.0 mm specifically for surgical applications 360° swivelling magnifying glass Otoscope head accessible to instruments adjustment screw to aid the positioning of the funnels zippered storage bag included batteries: 2 C. (v-medtech.com)
- Your provider may check your ears using a lighted tool (otoscope). (hopkinsmedicine.org)
Becomes swollen1
- Sometimes the ear canal becomes swollen, and then it can drain out of the ear and the hearing can become worse. (zeepedia.com)
Candling10
- What Is Ear Candling and Should You Try It? (healthline.com)
- Proponents of this treatment, called ear candling, claim that the warmth created by the flame causes suction. (healthline.com)
- What is ear candling supposed to do? (healthline.com)
- There's no scientific evidence that ear candling pulls out debris from the ear canal. (healthline.com)
- She mentioned that she had recently undergone an ear candling procedure at a massage center. (healthline.com)
- While there's no reliable evidence showing any benefits of ear candling, there's plenty showing its potential risks and harm. (healthline.com)
- The FDA added that they've found no valid scientific evidence supporting the effectiveness of ear candling. (healthline.com)
- Ear candling can be especially dangerous for small children. (healthline.com)
- Although some people go through the process of ear candling without significant injury, the practice requires time and money. (healthline.com)
- Find answers to common questions about ear candling below. (healthline.com)
Portion of the ear1
- The layer of epithelium encompassing the bony portion of the ear canal is much thinner and therefore, more sensitive in comparison to the cartilaginous portion. (wikipedia.org)
Tinnitus1
- Ototoxic Drugs Exposed reveals the ear-damaging side effects (hearing loss, tinnitus, balance problems, etc.) of 877 drugs, 35 herbals and 148 chemicals. (hearinglosshelp.com)
Procedure8
- Root canal therapy is a dental procedure that eliminates infected areas from a tooth, and then leaves a healthy tooth in its place. (ecuadororphans.org)
- If the tooth is at this stage the root canal procedure is the best option for treatment. (ecuadororphans.org)
- If your tooth has undergone root canal therapy, you'll need to visit your dentist for a follow-up appointment just a few days after the procedure to ensure everything is still healing properly. (ecuadororphans.org)
- The root canal procedure is required when a tooth is damaged or is severely decayed. (ecuadororphans.org)
- To prepare for the procedure, you lie on your side with one ear facing down. (healthline.com)
- After the procedure, the practitioner usually cuts the candle open vertically to show the patient the material that was drawn out of the ear. (healthline.com)
- For the procedure, your doctor will likely use local anesthesia to numb the area around your ears. (healthline.com)
- Tympanoplasty is a safe and effective outpatient procedure used to both eradicate disease from the middle ear and restore hearing and middle ear function. (medscape.com)
Hearing loss2
- In addition, 11-47% of patients also have a sensorineural hearing loss in the affected ear. (medscape.com)
- Hearing loss from a swollen and inflamed ear canal. (hopkinsmedicine.org)
Skin7
- This is because dirt and skin cells that have not been cleaned out then have formed a grainy mass inside the ear canal. (zeepedia.com)
- Even the skin around the ear can become red and swollen. (zeepedia.com)
- Apart from seborrhoeic dermatitis, certain underlying skin conditions may increase the risk of the Swollen ear canal. (medicalfoxx.com)
- This includes regularly cleaning the outer ear with a mild soap and water, and avoiding the use of harsh chemicals or alcohol-based products that can irritate the skin. (fitlifewarrior.com)
- The area will be closed, leaving smooth skin with no opening at the base of the ear flap. (vin.com)
- The components of the ear involved in cauliflower ear are the outer skin, the perichondrium, and the cartilage. (wikipedia.org)
- The outer ear skin is tightly adherent to the perichondrium because there is almost no subcutaneous fat on the anterior of the ear. (wikipedia.org)
Rarely1
- Although root canals rarely cause serious problems but they can trigger the development of a systemic disease if they're not done properly. (ecuadororphans.org)
Diagnosis1
- This means that the medical provider will make the diagnosis by using elements of the history of the injury (examples: participation in contact sports, trauma to the ear, previous similar episodes) and combine this with findings on physical exam (examples: tenderness to the area, bruising, deformation of the ear contours) to confirm the diagnosis and decide on the appropriate treatment for the patient. (wikipedia.org)
Sound waves4
- A hearing aid amplifies sound waves as they reach the ear. (marketresearch.com)
- After the ears are ablated, in many patients some hearing remains as sound waves can still be transmitted through the tissues. (vin.com)
- The hearing aid then converts the digital sounds back into sound waves and delivered to your ears through tiny speakers. (newyorkhearingdoctors.com)
- The outer ear-the part of the ear you see-funnels sound waves into the ear canal. (cdc.gov)
Facial nerve2
- The facial nerve runs just near the base of the ear. (vin.com)
- The facial nerve travels along with the posteroinferior growth of the mastoid, taking its final course from the middle ear and mastoid and exiting the skull base inferior to the EAC. (medscape.com)
Germs1
- When water stays in your ear canal, germs can grow. (hopkinsmedicine.org)
Nasal2
- Unclogging your nasal passageways can help with clogged ears. (healthline.com)
- Nasal steroids may help unclog your ears by reducing the amount of inflammation in the nasal passages. (healthline.com)
Treatment5
- The study showed that root canal treatment was more effective at stopping tooth loss than periapical tissues deterioration. (ecuadororphans.org)
- This finding was confirmed by the fact that the treatment of root canals can often keep teeth functioning for a long time. (ecuadororphans.org)
- A relaxing treatment which benefits those who suffer from ailments related to the ear canal. (cravenclinic.co.uk)
- A method of underwater endoscopic ear surgery is proposed for the treatment of superior canal dehiscence. (elsevierpure.com)
- To assist with settling on the best form of treatment for cauliflower ear Yotsuyanagi et al. (wikipedia.org)
Swimmers1
- A 2011 study from the CDC projected that swimmers' ears caused 2.4 million trusted Source medical visits annually. (medrot.com)