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Ear, InnerEndolymphatic DuctEndolymphatic SacLabyrinth DiseasesCochlear DiseasesSemicircular CanalsTemporal BoneVestibule, LabyrinthVestibular AqueductPlacentaPlacentationVestibular DiseasesVestibular Nucleus, LateralVestibular NucleiPetrous BoneCaloric TestsVestibular NerveTrophoblastsHydrocharitaceaeFenestration, LabyrinthCochleaEndolymphEmbryo LossReflex, Vestibulo-OcularPregnancyLabyrinthitisVertigoSpiral Ligament of CochleaEndolymphatic HydropsRotationScandentiaVestibular Function TestsCochlear DuctMetrial GlandVestibulocochlear Nerve DiseasesMedical IllustrationMeniere DiseasePregnancy, AnimalOtolithic MembraneFetal WeightChinchillaSaccule and UtricleNystagmus, PhysiologicEar NeoplasmsPlacental LactogenHead MovementsHair Cells, VestibularBone ConductionNystagmus, PathologicYolk SacVestibulocochlear NerveHearing Loss, SuddenHearingEfferent PathwaysFacial NerveHeadAllantoisDeciduaPlacenta DiseasesChorionLabyrinth Supporting CellsNeuroma, AcousticEmbryo, MammalianFetal DevelopmentDecerebrate StateUterusHearing LossHearing Loss, SensorineuralGene Expression Regulation, DevelopmentalEye MovementsIn Situ HybridizationFetal Death
CochleaBonyCochlearMaculaVestibulePetrous portOtic capsuleSpiralAuditoryOuterBoneAnatomyMiddleNerveSemicircular canalsBony labyrinthPerilymphENDOLYMPHVestibularFluid-filledCanalAmpullaInternal earReceptorsCochlear ductConsistsStructuresThinPortionBand
Cochlea8
  • The spiral canal of the cochlea is a section of the bony labyrinth of the inner ear that is approximately 30 mm long and makes 23⁄4 turns about the modiolus. (wikipedia.org)
  • The osseous labyrinth includes the vestibular system (made up of the semicircular canals and the vestibule) and the cochlea. (msdmanuals.com)
  • The cochlea, which houses the sensory organ for hearing, consists of a triangular-shaped, fluid-filled channel, the membranous labyrinth, that is housed within the bony labyrinth (otic capsule). (cdc.gov)
  • The membranous labyrinth spirals around a central bony canal, the modiolus, that contains the auditory division of the vestibulocochlear nerve (i.e., 8th cranial) and blood vessels to the cochlea. (cdc.gov)
  • The cochlear duct is suspended in the middle of the tubular osseous cochlea. (digitalhistology.org)
  • The membranous labyrinth houses the cochlea and the vestibular apparatus, both of which are supplied by cranial nerve VIII. (basicmedicalkey.com)
  • The cochlear duct, part of the membranous labyrinth, is a triangular-shaped wedge located in the cochlea. (digitalhistology.org)
  • The spiral lamina that also projects from the modiolus is a microanatomical osseous structure that separates the spiral of the cochlea into scala tympani (inferiorly), scala media, and scala vestibuli (superiorly). (neupsykey.com)
Bony7
  • It is a spiral-shaped cavity in the bony labyrinth, in humans making 2.75 turns around its axis, the modiolus. (wikipedia.org)
  • Bacteria may gain access to the membranous labyrinth by these pathways or through congenital or acquired defects of the bony labyrinth. (medscape.com)
  • The membranous labyrinth is anchored to the bony labyrinth at the spiral ligament, the lateral edge of the triangle, and at the lip of the osseous spiral lamina medially. (cdc.gov)
  • Except for its attachments laterally and medially, the membranous labyrinth is separated from the bony labyrinth by fluid-filled channels (i.e., perilymph). (cdc.gov)
  • 2) The bony labyrinth is joined to the rest of the skull by fibrous tissue only. (cdc.gov)
  • 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)
  • The membranous labyrinth is separated from the bony labyrinth by a clear liquid, perilymph. (vestib.org)
Cochlear3
  • The labyrinth maintains connections with the central nervous system (CNS) and subarachnoid space by way of the internal auditory canal and cochlear aqueduct. (medscape.com)
  • In patients with meningitis, bacteria can spread from the cerebrospinal fluid to the membranous labyrinth by way of the internal auditory canal or cochlear aqueduct. (medscape.com)
  • The organ of Corti, the receptor for sound, is located in the cochlear duct (arrows) of the membranous labyrinth. (digitalhistology.org)
Macula1
  • The vestibule shelters two membranous elements: the saccule and the utricle, which contain, in a localised part of their wall, a sensory epithelium, the macula. (vestib.org)
Vestibule1
  • Its base is located at the same level as the floor of the vestibule from which it is separated by an osseous wall. (vestib.org)
Petrous port2
  • The labyrinth lies within the petrous portion of the temporal bone adjacent to the mastoid cavity and connects with the middle ear at the oval and round windows. (medscape.com)
  • The inner ear is located within the petrous portion of the temporal bone and is composed of a membranous labyrinth surrounded by an osseous labyrinth. (basicmedicalkey.com)
Otic capsule1
  • The inner ear can be divided into the osseous labyrinth or otic capsule and the membranous labyrinth inside the otic capsule. (bvsalud.org)
Spiral2
  • Peripheral processes of CN VIII that innervate the hair cells exit the organ of Corti through the osseous spiral lamina and continue to the spiral ganglia where their bipolar nerve cell bodies are located. (digitalhistology.org)
  • Peripheral axons (blue arrows) of this nerve pass medially from the hair cells through the osseous spiral lamina (black arrows) to the spiral ganglion, where their bipolar nerve cell bodies are located. (digitalhistology.org)
Auditory1
  • Symptoms of labyrinthitis occur when infectious microorganisms or inflammatory mediators invade the membranous labyrinth and damage the vestibular and auditory end organs. (medscape.com)
Outer1
  • The labyrinth is composed of an outer osseous framework surrounding a delicate, membranous network that contains the peripheral sensory organs for balance and hearing. (medscape.com)
Bone1
  • Within the bone is the osseous labyrinth, which encases the membranous labyrinth. (msdmanuals.com)
Anatomy1
Middle2
  • The anatomic relationships of the labyrinth, middle ear, mastoid, and subarachnoid space are essential to understanding the pathophysiology of labyrinthitis. (medscape.com)
  • Bacterial infections of the middle ear or mastoid most commonly spread to the labyrinth through a dehiscent horizontal semicircular canal. (medscape.com)
Nerve1
  • Cranial nerve VIII, the vestibulocochlear, innervates the receptors in the membranous labyrinth. (digitalhistology.org)
Semicircular canals2
Bony labyrinth6
  • It is a spiral-shaped cavity in the bony labyrinth, in humans making 2.75 turns around its axis, the modiolus. (wikipedia.org)
  • The membranous labyrinth is anchored to the bony labyrinth at the spiral ligament, the lateral edge of the triangle, and at the lip of the osseous spiral lamina medially. (cdc.gov)
  • Except for its attachments laterally and medially, the membranous labyrinth is separated from the bony labyrinth by fluid-filled channels (i.e., perilymph). (cdc.gov)
  • 2) The bony labyrinth is joined to the rest of the skull by fibrous tissue only. (cdc.gov)
  • The walls of the bony labyrinth are continuous with that of the surrounding temporal bone. (drtbalu.co)
  • The inner contours of the bony labyrinth more or less follows the contours of the membranous labyrinth. (drtbalu.co)
Perilymph2
  • Fluids found within the osseous labyrinth (PERILYMPH) and the membranous labyrinth (ENDOLYMPH) of the inner ear. (bvsalud.org)
  • The first is the round window which consists of a thin membranous partition that separates the perilymph of cochlear chambers from the air filled middle ear cavity. (drtbalu.co)
ENDOLYMPH2
  • It is entirely separate from the ENDOLYMPH which is contained in the membranous labyrinth. (nih.gov)
  • Membranous labyrinth contains fluid which is known as the endolymph which is rich in potassium. (drtbalu.co)
Vestibular1
  • In this study, the membranous and osseous labyrinths of the wild type mouse inner ear were examined using volumetric data from ultra high-field magnetic resonance imaging (MRI) with gadolinium contrast at 9.4 Tesla and high-resolution micro-computed tomography (µCT) to visualize the scalae and vestibular apparatus, and to establish imaging protocols and parameters for comparative analysis of the normal and mutant mouse inner ear. (openneuroimagingjournal.com)
Fluid-filled1
  • The osseous labyrinth surrounds the membranous labyrinth, which appears as a correspondingly complex fluid-filled system. (s-gold.hu)
Canal4
  • The portion of the membranous labyrinth housed within each semicircular canal is the semicircular duct, containing a crista ampullaris, the receptor for angular acceleration. (digitalhistology.org)
  • The former occupies less than one half the en- tire length of the canal, and is formed by an inflection of the cartilage of the pinna. (nih.gov)
  • The membrana tympani is an elliptical membranous disk, about nine by ten millimetres, inserted into the sulcus tympanicus 3 at the inner end of the external auditory canal. (nih.gov)
  • The superior margin of the outer orifice overhangs considerably the lower edge, but owing to the obliquity of the inner aperture, to which the membrana tympani is attached, the superior wall of the osseous canal only exceeds the length of the lower wall by one or two millimetres. (co.ma)
Ampulla2
  • But, at the ampulla the membranous portion enlarges to occupy the entire space of the bony ampullae. (drtbalu.co)
  • Differing slightly in length, each forms about two-thirds of a circle, one extremity of which is dilated and termed the osseous ampulla. (co.ma)
Internal ear1
  • The ear, the organ of hearing, is subject to three general divisions: the external ear, the middle ear or tympanum, and the labyrinth or internal ear. (nih.gov)
Receptors2
  • These receptors are located in a series of membranous tubes and sacs, collectively termed the membranous labyrinth, which are suspended in a series of bony spaces, the osseous labyrinth. (digitalhistology.org)
  • Membranous labyrinth, which contains the receptors responsible for regulating balance, muscular tonus, and hearing, is surrounded by ear capsule, which corresponds to petrous part and tympanic part of temporal bone in mammals. (fortunepublish.com)
Cochlear duct1
Consists1
  • It consists of the bony and membranous labyrinth. (drtbalu.co)
Structures1
  • However, the membranous labyrinth structures are not distinguishable on CT images(15). (stickycompany.com)
Thin1
  • Watety succeeded in a thin membranous band, overlappioar the glaserian fissure numerous ck>sed vesicles. (culturaenvena.org)
Portion2
  • It has a cartilaginous and osseous portion. (nih.gov)
  • The osseous portion is free from hairs and glands, but the portion exterior to this is supplied by fine hairs and glands (glandulaa ceruminosae) which secrete the ear-wax. (nih.gov)
Band1