| OD | Doctor of Optometry; obtained absorbance; occipital dysplasia; occupational dermatitis; occupational... |
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| OFD | object-film distance; occipital frontal diameter; oro-facial-digital [syndrome] |
| OH | hydroxycorticosteroid; obstructive hypopnea; occipital horn; occupational health; occupational histo... |
| OHS | obesity hypoventilation syndrome; occipital Horn syndrome; occupational health service; ocular histo... |
| OTS | occipital temporal sulcus; orotracheal suction |
| atlanto-occipital joint | <anatomy> A condylar synovial joint between the superior articular facets of the atlas and the condyles of the occipital bone. Synonym: articulatio atlanto-occipitalis, atlanto-occipital articulation. (05 Mar 2000) |
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| atlanto-occipital membrane | <anatomy> More specifically see: anterior atlanto-occipital membrane, posterior atlanto-occipital membrane. (05 Mar 2000) |
| atlo-occipital | <anatomy> Relating to the atlas and the occipital bone. Synonym: atlo-occipital. (05 Mar 2000) |
| auricular branch of occipital artery | <anatomy, artery> Distribution, posterior auricle; anastomosis, posterior auricular artery. Synonym: ramus auricularis arteriae occipitalis. (05 Mar 2000) |
| basal part of occipital bone | The part of the occipital bone that lies anterior to the foramen magnum and joins with the body of the sphenoid bone. Synonym: pars basilaris ossis occipitalis, basal part of occipital bone, basilar apophysis, basilar process of occipital bone, basilar process, basiocciput. (05 Mar 2000) |
| basilar part of the occipital bone | The part of the occipital bone that lies anterior to the foramen magnum and joins with the body of the sphenoid bone. Synonym: pars basilaris ossis occipitalis, basal part of occipital bone, basilar apophysis, basilar process of occipital bone, basilar process, basiocciput. (05 Mar 2000) |
| basilar process of occipital bone | The part of the occipital bone that lies anterior to the foramen magnum and joins with the body of the sphenoid bone. Synonym: pars basilaris ossis occipitalis, basal part of occipital bone, basilar apophysis, basilar process of occipital bone, basilar process, basiocciput. (05 Mar 2000) |
| calcarine branch of medial occipital artery | <anatomy, artery> Branch of medial occipital artery which runs in relationship to the calcarine sulcus. Synonym: ramus calcarinus arteriae occipitalis medialis, arteria calcarina, calcarine artery. (05 Mar 2000) |
| parietal branch of medial occipital artery | <anatomy, artery> An anterior branch of the medial occipital artery supplying the posterior section of the parietal lobe of the cerebrum. Synonym: ramus parietalis arteriae occipitalis medialis. (05 Mar 2000) |
| parieto-occipital | Relating to the parietal and occipital bones or to the parts of the cerebral cortex corresponding thereto. (05 Mar 2000) |
| parieto-occipital artery | <anatomy, artery> The largest cortical branch of the pericallosal artery supplying the medial and superolateral surface of the parietal lobe posterior to the paracentral lobule; rarely does it extend to supply part of the occipital lobe. Synonym: arteria parieto-occipitalis, superior internal parietal artery. (05 Mar 2000) |
| parieto-occipital fissure | A very deep, almost vertically oriented fissure on the medial surface of the cerebral cortex, marking the border between the parietal lobe and the cuneus of the occipital lobe; its lower part curves forward and fuses with the anterior extent of the calcarine fissure (sulcus calcarinus); the great depth of this combined fissure causes a bulge in the medial wall of the occipital horn of the lateral ventricle, the calcar avis. Synonym: sulcus parieto-occipitalis, fissura parietooccipitalis, parieto-occipital fissure. (05 Mar 2000) |
| parieto-occipital sulcus | A very deep, almost vertically oriented fissure on the medial surface of the cerebral cortex, marking the border between the parietal lobe and the cuneus of the occipital lobe; its lower part curves forward and fuses with the anterior extent of the calcarine fissure (sulcus calcarinus); the great depth of this combined fissure causes a bulge in the medial wall of the occipital horn of the lateral ventricle, the calcar avis. Synonym: sulcus parieto-occipitalis, fissura parietooccipitalis, parieto-occipital fissure. (05 Mar 2000) |
| mastoid border of occipital bone | The margin of the occipital squama that articulates with the temporal bone. Synonym: margo mastoideus squamae occipitalis, mastoid margin of occipital bone. (05 Mar 2000) |
| mastoid branch of occipital artery | <anatomy, artery> Mastoid branch of occipital artery, passing through the mastoid foramen; distribution, mastoid air cells; anastomosis, middle meningeal artery. Synonym: arteriae occipitalis, ramus mastoideus arteriae occipitalis, mastoid branch of occipital artery. (05 Mar 2000) |