| occipital bone | The bone forming the rear (and rear bottom) of the skull. (12 Dec 1998) |
|---|---|
| occipital border | Edge of a bone which articulates with the occipital bone. See: occipital border of parietal bone, occipital border of temporal bone. Synonym: margo occipitalis, occipital margin. (05 Mar 2000) |
| occipital border of parietal bone | The posterior margin of the parietal bone that articulates with the occipital squama. Synonym: margo occipitalis ossis parietalis. (05 Mar 2000) |
| occipital border of temporal bone | That part of the temporal bone that articulates with the occipital squama. Synonym: margo occipitalis ossis temporalis. (05 Mar 2000) |
| occipital branch | Nomina Anatomica lists occipital branches of 1) posterior auricular artery (rami occipitalis arteriae auricularis posterior; 2) posterior auricular nerve (rami occipitalis nervi auricularis posterioris; and 3) occipital artery, rami occipitales arteriae occipitis. Synonym: ramus occipitalis. (05 Mar 2000) |
| occipital cerebral veins | The superior cerebral veins draining the occipital cortex and emptying into the superior sagittal sinus and the transverse sinus. Synonym: venae occipitales. (05 Mar 2000) |
| occipital condyle | One of two elongated oval facets on the undersurface of the occipital bone, one on each side of the foramen magnum, which articulate with the atlas. Synonym: condylus occipitalis. (05 Mar 2000) |
| occipital emissary vein | <anatomy, vein> An inconstant vessel perforating the squama of the occipital bone to connect the occipital veins with the confluens sinuum. Synonym: vena emissaria occipitalis, emissarium occipitale. (05 Mar 2000) |
| occipital fontanel | A triangular interval at the union of the lambdoid and sagittal sutures where the occipital angles of the parietal bones meet the occipital. Synonym: fonticulus posterior, occipital fontanel. (05 Mar 2000) |
| occipital groove | A narrow groove medial to the mastoid notch of the temporal bone that lodges the occipital artery. Synonym: sulcus arteriae occipitalis, sulcus of occipital artery. (05 Mar 2000) |
| occipital gyri | See: inferior occipital gyrus, superior occipital gyrus. (05 Mar 2000) |
| occipital horn | The posterior or occipital division of the lateral ventricle of the brain, extending backward into the occipital lobe; the posterior gray column of the spinal cord as appearing in cross section. Synonym: cornu posterius ventriculi lateralis, cornu posterius, cornua of spinal cord, occipital horn. (05 Mar 2000) |
| occipital horn syndrome | <syndrome> An X-linked recessive disorder in which there is defective biliary excretion of copper resulting in a deficiency of lysyl oxidase causing skin and joint laxity. Ocular-mucous membrane syndrome, Stevens-Johnson syndrome with associated ocular lesions (conjunctivitis, panophthalmitis, iritis), oral lesions (bullae, erosions, superficial ulcers), and genital lesions (urethritis, balanitis circinata, blebs). (05 Mar 2000) |
| occipital lobe | House the visual interpretation centres. (27 Sep 1997) |
| occipital lobe epilepsy | A localization-related epilepsy where seizures originate from the occipital lobe. Symptoms commonly include visual abnormalities during seizures. (05 Mar 2000) |