| MOP | major organ profile; medical outpatient |
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| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |
| MUP | major urinary protein; maximal urethral pressure; motor unit potential |
| Nutcracker syndrome | the vein from the left kidney is obstructed by one of the major arteries leaving the aorta. It can c... |
| occipital | <anatomy> Of or pertaining to the occiput, or back part of the head, or to the occipital bone. <anatomy> Occipital bone, the point of the occiput in the mesial plane farthest from the ophryon. Origin: Cf. F. Occipital. <anatomy> The occipital bone. Source: Websters Dictionary (01 Mar 1998) |
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| occipital anchorage | Anchorage in which the top and back of the head are used for resistance by means of a headgear. (05 Mar 2000) |
| occipital angle of parietal bone | The posterior superior angle of the parietal bone. Synonym: Broca's angles. Synonym: Daubenton's angle. (05 Mar 2000) |
| occipital artery | <anatomy, artery> Origin, external carotid; branches, sternocleidomastoid, meningeal, auricular, occipital, mastoid, and descending. Synonym: arteria occipitalis. (05 Mar 2000) |
| occipital belly of occipitofrontalis muscle | <anatomy> The posterior belly of the occipitofrontalis muscle. See: occipitofrontalis muscle. Synonym: venter occipitalis musculi occipitofrontalis, occipitalis muscle. (05 Mar 2000) |
| 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) |