• The occipital bone (/ˌɒkˈsɪpɪtəl/) is a cranial dermal bone and the main bone of the occiput (back and lower part of the skull). (wikipedia.org)
  • At the base of the skull in the occipital bone, there is a large oval opening called the foramen magnum, which allows the passage of the spinal cord. (wikipedia.org)
  • The superior angle of the occipital bone articulates with the occipital angles of the parietal bones and, in the fetal skull, corresponds in position with the posterior fontanelle. (wikipedia.org)
  • Skull has a notably long vault with a bulbous occipital bone . (yourdictionary.com)
  • The Atlas vertebra meets with the occipital condyles which flank the foramen magnum in the basilar part of the occipital bone of the skull. (yourdictionary.com)
  • One end is attached to the occipital bone of the skull. (yourdictionary.com)
  • Cranial sutures are fibrous bands of tissue that connect the bones of the skull. (medlineplus.gov)
  • The bones in your skull can be divided into the cranial bones, which form your cranium, and facial bones, which make up your face. (healthline.com)
  • This is a flat bone located in the very back of your skull. (healthline.com)
  • This type involves a break in one of the bones near the base of your skull, such as the sphenoid bone. (healthline.com)
  • Common symptoms include a sloped forehead, extra bone within skull sutures, and an enlarged skull. (healthline.com)
  • The right didactic side of this skull is painted to segment out the different bones. (anatomywarehouse.com)
  • The Axis Scientific occipital bone with C1 and C2 vertebrae anatomy model replicates the trapezoid shaped bone located at the base of the skull, mounted on a white base with the atlas and axis bones. (anatomywarehouse.com)
  • The Axis Scientific occipital bone anatomy model replicates the trapezoid shaped bone located at the base of the skull. (anatomywarehouse.com)
  • Axis Scientific temporal bone anatomy models perfectly simulate these important bones located on the base and sides of the skull. (anatomywarehouse.com)
  • Occipital lymph nodes are those found on the back of your head, near the base of your skull. (xshotpix.com)
  • Being one the skull covering muscle, occipitalis muscle is also known as the occipital belly of epicranius. (xshotpix.com)
  • A case is presented of 41-year-old woman with giant cell tumor in parieto-occipital region with injury of external bone lamina, growing into the skull cavity. (nel.edu)
  • Numerous osteolytic lesions in the skull skeleton and multifocal bone injuries were observed, also. (nel.edu)
  • Of the three fetuses presenting the greatest molding of the skull bones and brain shape deformation, two were delivered by cesarean-section (one after a forceps failure and one for engagement default), while the fetus presenting with the greatest skull molding and brain shape deformation was born physiologically. (plos.org)
  • The muscle is flat, wide and superficial and it originates from the occipital bone which forms the base of the skull and the back. (shapefit.com)
  • Although the skull appears to be 1 large bone, there are actually several major bones that are connected together. (stanfordchildrens.org)
  • This allows the bone to enlarge evenly as the brain grows and the skull expands. (stanfordchildrens.org)
  • There are 2 fontanelles (the space between the bones of an infant's skull where the sutures intersect) that are covered by tough membranes that protect the underlying soft tissues and brain. (stanfordchildrens.org)
  • The disorder is a congenital malformation involving the caudal occipital region of the skull, leading to overcrowding of the caudal fossa and compression of the cervicomedullary junction at the level of the foramen magnum. (vin.com)
  • Middle third of the Line forms the apex of the posterior triangle and is related to the occipital artery. (worldofmedicalsaviours.com)
  • Occipital Artery supplies blood to the occipitalis muscle. (xshotpix.com)
  • The occipital bone overlies the occipital lobes of the cerebrum. (wikipedia.org)
  • triangular in shape: lodge occipital lobes of the cerebrum with meninges. (worldofmedicalsaviours.com)
  • The other portion consists of a partial left parietal and temporal lobe, the lower part of the occipital lobe, and most of the cerebellar lobes. (phys.org)
  • When compared Nanjing 1 with the Zhou Kou Dian individuals, Hexian, and the Indonesian and African H. erectus specimens, Nanjing 1 has unique, large, superior frontal convolutions, and lacks strong posterior projection of the occipital lobes , said Song Xing, coauthor, a Ph. (phys.org)
  • The squamous part is the curved, expanded plate behind the foramen magnum and is the largest part of the occipital bone. (wikipedia.org)
  • From the inion, along the midline of the squamous part until the foramen magnum, runs a ridge - the external occipital crest (also called the medial nuchal line) and this gives attachment to the nuchal ligament. (wikipedia.org)
  • Running across the outside of the occipital bone are three curved lines and one line (the medial line) that runs down to the foramen magnum. (wikipedia.org)
  • The foramen magnum is a large hole situated in the middle, with the clivus, a smooth part of the occipital bone travelling upwards in front of it. (wikipedia.org)
  • To the sides of the foramen sitting at the junction between the lateral and base of the occipital bone are the hypoglossal canals. (wikipedia.org)
  • Further out, at each junction between the occipital and petrous portion of the temporal bone lies a jugular foramen. (wikipedia.org)
  • The clivus, a smooth bony section, travels upwards on the front surface of the foramen, and the median internal occipital crest travels behind it. (wikipedia.org)
  • The Occipital condyle is located on the inferior aspect of the lateral part of the occipital bone on either side of the Foramen Magnum. (xranatomy.com)
  • a prominence midway between the posterior margin of the foramen magnum and the superior angle of the bone. (worldofmedicalsaviours.com)
  • a ridge running in the median plane from the external occipital protuberance to foramen magnum, gives attachment to the ligamentum nuchae. (worldofmedicalsaviours.com)
  • The left half of the occipital bone, including a part of the margin of the foramen magnum (22), has been cut away extensively. (stanford.edu)
  • As the dura passes through the foramen magnum its outer portion blends with the dense fibrous tissue of the posterior atlanto-occipital membrane (9). (stanford.edu)
  • Craniocervical junction abnormalities are congenital or acquired abnormalities of the occipital bone, foramen magnum, or first two cervical vertebrae that decrease the space for the lower brain stem and cervical cord. (msdmanuals.com)
  • impaired epiphyseal bone growth, resulting in shortened, malformed bones) sometimes causes the foramen magnum to narrow or fuse with the atlas and thus may compress the spinal cord or brain stem. (msdmanuals.com)
  • The lateral angles are situated at the extremities of the groove for the transverse sinuses: each is received into the interval between the mastoid angle of the parietal bone, and the mastoid portion of the temporal bone. (wikipedia.org)
  • The superior borders extend from the superior to the lateral angles: they are deeply serrated for articulation with the occipital borders of the parietals, and form by this union the lambdoidal suture. (wikipedia.org)
  • its medial part gives origin to the highest fibres of the Trapezius and its lateral part to the Occipital belly of the Occipito-frontalis, below which are insertions of sternocleidomastoid and Splentus capilis. (worldofmedicalsaviours.com)
  • Relating to the nerve fibers leading from the occipital lobe of the cerebral cortex to the thalamus. (theodora.com)
  • Like the other cranial bones, it is classed as a flat bone. (wikipedia.org)
  • The occipital bone, like the other seven cranial bones, has outer and inner layers (also called plates or tables) of cortical bone tissue between which is the cancellous bone tissue known in the cranial bones as diploë. (wikipedia.org)
  • The cranial bones remain separate for about 12 to 18 months. (medlineplus.gov)
  • What are cranial bones? (healthline.com)
  • Your cranial bones are held together by unique joints called sutures, which are made of thick connective tissue. (healthline.com)
  • They're irregularly shaped, allowing them to tightly join all the uniquely shaped cranial bones. (healthline.com)
  • Explore the interactive 3-D diagram below to learn more about the cranial bones. (healthline.com)
  • Several injuries and health conditions can impact your cranial bones, including fractures and congenital conditions. (healthline.com)
  • Mutations to a specific gene cause unusual development of the teeth and bones, including the cranial bones. (healthline.com)
  • This is an inherited condition that causes thickening of the cranial bones, which can lead to a protruding forehead and wide-set eyes. (healthline.com)
  • This study demonstrates the value of 3D MRI study with 3D finite element mesh reconstruction during the second stage of labor to reveal how the fetal brain is impacted by the molding of the cranial bones. (plos.org)
  • The inner surface of the occipital bone forms the base of the posterior cranial fossa. (wikipedia.org)
  • The muscle originates at the superior nuchal line,one among the four curved lines of the occipital bone, as well as the mastoid section of the temporal bone, bones present at the base and sides of the cranium. (xshotpix.com)
  • The occipital bone is the trapezoidal-shaped bone found at the lower-back area of the cranium. (xshotpix.com)
  • The medical term for this part of the cranium is the occipital bone. (acufinder.com)
  • The bone models have all the structures and bony landmarks of the temporal bone. (anatomywarehouse.com)
  • The regeneration of the bony caudal fin of Chi/+ and p3h1-/- was employed to investigate the impact of abnormal collagen synthesis on bone cell differentiation. (bvsalud.org)
  • Occipital bone anomalies rarely cause rotational VA occlusion, and patients with nontraumatic intermittent occlusion of the VA usually present with compromised vertebrobasilar flow. (elsevierpure.com)
  • It is an example of an organ or bone with similar underlying anatomical features found in different animals. (yourdictionary.com)
  • Relating to the occipital bone and the mastoid process. (theodora.com)
  • We found the tumor arising from the occipital bone and located at the epidural space. (elsevierpure.com)
  • Parathyroid adenoma diagnosed on the basis of a giant cell tumor of parieto-occipital region and multifocal bone injuries. (nel.edu)
  • Bohdanowicz-Pawlak A, Szymczak J, Jakubowska J, Jedrzejuk D, Pawlak A, Lukienczuk T, Bolanowski M. Parathyroid adenoma diagnosed on the basis of a giant cell tumor of parieto-occipital region and multifocal bone injuries. (nel.edu)
  • The tumor grows locally within the bone of origin. (medscape.com)
  • The inferior angle is fused with the body of the sphenoid bone. (wikipedia.org)
  • In view of the location of the perforation and the limited details on the edges, the motivation behind the trepanation could be due to the medical treatment of trauma on the occipital bone or a postmortem ritual. (springer.com)
  • Damage to the occipital bone is usually the result of trauma. (xshotpix.com)
  • An axial T2-weighted MRI scan that shows hydrocephalus, a large cerebrospinal fluid cyst in the posterior fossa, thinned occipital bone (arrows), and hypoplastic cerebellar hemispheres with a winged appearance (c). (medscape.com)
  • Near the middle of the outer surface of the squamous part of the occipital (the largest part) there is a prominence - the external occipital protuberance. (wikipedia.org)
  • Due to its embryonic derivation from paraxial mesoderm (as opposed to neural crest, from which many other craniofacial bones are derived), it has been posited that "the occipital bone as a whole could be considered as a giant vertebra enlarged to support the brain. (wikipedia.org)
  • Osteogenesis imperfecta (OI) is an extracellular matrix disorder characterized by defects in collagen-1 transport or synthesis, resulting in bone abnormalities. (bvsalud.org)
  • The sonoanatomical knowledge of the upper cervical and occipital region is critical for the identification of structures involved in the pathophysiology of cervicogenic headache and neck pain. (xshotpix.com)
  • Where does occipital neuralgia occur in the neck? (xshotpix.com)
  • It involves the occipital nerves - two pairs of nerves that originate near the second and third vertebrae of the neck. (xshotpix.com)
  • The three sacral vertebrae fuse to form one bone, the sacrum, with which the pelvic girdle articulates. (pvillage.org)
  • The spine is made of 33 bones called vertebrae. (pvillage.org)
  • Radiographic and three-dimensional computerized tomography bone images exhibited an anomalous osseous process of the occipital bone projecting to the posterior arch of the atlas. (elsevierpure.com)
  • Occipital bone and atlas can be detached individually from the spine. (sargentwelch.com)
  • These bones are held together by strong, fibrous, elastic tissues called sutures. (medlineplus.gov)
  • [ 4 , 5 ] Frequently, it is diagnosed only after a recurrence of disease in an area of bone where a diagnosis of fibrous dysplasia had previously been made. (medscape.com)
  • See also Imaging in Fibrous Cortical Defect and Nonossifying Fibroma , Fibrosarcoma , Aneurysmal Bone Cyst [Orthopedic Surgery], Aneurysmal Bone Cyst Imaging , Osteoblastoma [Orthopedic Surgery], and Osteoblastoma Imaging . (medscape.com)
  • Occipital nodes drain the posterior scalp. (xshotpix.com)
  • During an occipital nerve block, about a teaspoon of local anesthetic and steroids are injected into the scalp where the trunk of the nerve is. (xshotpix.com)
  • Consistent findings on MR imaging indicative of CM are attenuation/obliteration of the dorsal subarachnoid space at the cervicomedullary junction and rostral displacement of the caudal cerebellum by the occipital bone. (vin.com)
  • Bone scan of a low-grade central osteosarcoma of the distal femur. (medscape.com)
  • The spinal column model consists of the male pelvis and occipital bone. (sargentwelch.com)
  • a wide groove with raised margins extending upwards from internal occipital protuberance to the superior angle. (worldofmedicalsaviours.com)
  • During childbirth, the flexibility of the sutures allows the bones to overlap so the baby's head can pass through the birth canal without pressing on and damaging their brain. (medlineplus.gov)
  • These bones are separated from each other by sutures . (radiopaedia.org)
  • Sutures allow the bones to move during the birth process. (stanfordchildrens.org)
  • The area above the highest nuchal line is termed the occipital plane and the area below this line is termed the nuchal plane. (wikipedia.org)
  • Peripheral nerve stimulation (PNS) of the occipital nerves is a potentially promising therapy for CM patients. (nih.gov)
  • Where does an occipital nerve block take place? (xshotpix.com)
  • In this randomized, controlled multicenter study, patients diagnosed with CM were implanted with a neurostimulation device near the occipital nerves and randomized 2:1 to active (n = 105) or sham (n = 52) stimulation. (nih.gov)
  • Although this study failed to meet its primary endpoint, this is the first large-scale study of PNS of the occipital nerves in CM patients that showed significant reductions in pain, headache days, and migraine-related disability. (nih.gov)
  • Low-grade central osteosarcoma is a rare variant of osteosarcoma that originates within the medullary cavity of bone. (medscape.com)
  • Interestingly, the chemical chaperone 4-phenylbutyrate (4-PBA), known to reduce cellular stress and increase collagen secretion, improved bone formation only in p3h1-/- by favoring caudal fin growth without affecting bone cell markers expression. (bvsalud.org)
  • The median internal occipital crest travels behind it to the internal occipital protuberance, and serves as a point of attachment to the falx cerebri. (wikipedia.org)
  • There, Johanson discovered a fossil forearm bone and quickly identified it as a species of hominin, a human ancestor originating after the evolutionary split from the ancestors of apes. (nasa.gov)
  • forearm bone. (infovisual.info)
  • A fracture refers to any type of break in a bone. (healthline.com)
  • A linear fracture in a cranial bone means there's a break in the bone, but the bone itself hasn't moved. (healthline.com)
  • The oval perforation is located on the occipital bone, and neither fracture nor apparent healing signs are observed on the margins. (springer.com)
  • the area above this line is covered with the occipital belly of the occipito frontalis and the galea aponeurotica. (worldofmedicalsaviours.com)
  • This is a pair of irregular bones located under each of the parietal bones. (healthline.com)
  • By applying a darker color in the back of the head from the occipital bone to the nape, and a lighter shade to the rest, the distinctive shape of the haircut is emphasized. (yourdictionary.com)
  • Sarah points out that many people, including some stylists, may not be aware that this type of cut requires fullness in the back of the head, around the occipital bone . (latest-hairstyles.com)
  • An occipital bone anomaly can cause rotational VA occlusion at the craniovertebral junction in patients who present with repeated embolic strokes resulting from injury to the arterial wall. (elsevierpure.com)
  • This is the junction of the 2 parietal bones and the occipital bone. (stanfordchildrens.org)
  • At the midpoint where the lines intersect a raised part is formed called the internal occipital protuberance. (wikipedia.org)