| SMAS | submuscular aponeurotic system; superficial musculo-aponeurotic system; superior mesenteric artery s... |
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| SMV | superior mesenteric vein |
| SO | salpingo-oophorectomy; Schlatter-Osgood [test]; second opinion; sex offender; spheno-occipital [sync... |
| SOF | superior orbital fissure |
| SOM | secretory otitis media; sensitivity of method; serous otitis media; somatotropin; state operations m... |
| subparietal sulcus | A sulcus continuing the direction of the cingulate sulcus from where the marginal part of that fissure bends upward; it forms the upper boundary of the posterior portion of the cingulate gyrus. Synonym: sulcus subparietalis. (05 Mar 2000) |
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| sulcus | 1. <anatomy> A groove or furrow, as one of the grooves on the surface of the cerebrum in mammals. 2. <zoology> In Dinoflagellata, a longitudinal groove in which a flagellum lies; in Anthozoa, the ventral siphonoglyph. (04 Mar 1998) |
| sulcus ampullaris | The groove on the external surface of the ampulla of each saemicircular duct where the nerve enters the crista ampullaris. Synonym: sulcus ampullaris. (05 Mar 2000) |
| sulcus angularis | A sharp angular depression in the lesser curvature of the stomach at the junction of the body with the pyloric canal. Synonym: incisura angularis, sulcus angularis. (05 Mar 2000) |
| sulcus anthelicis transversus | A deep groove on the cranial surface of the auricle separating the eminences of the triangular fossa and of the concha. Synonym: sulcus anthelicis transversus. (05 Mar 2000) |
| sulcus aorticus | A broad deep groove on the medial aspect of the left lung above and behind the hilum receiving the arch of the aorta and the thoracic aorta. Synonym: sulcus aorticus. (05 Mar 2000) |
| sulcus arteriae occipitalis | 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) |
| sulcus arteriae temporalis mediae | <anatomy, artery> A vertical groove located above the external acoustic meatus on the external surface of the squamous part of the temporal bone. Synonym: sulcus arteriae temporalis mediae, sulcus for middle temporal artery. (05 Mar 2000) |
| sulcus arteriae vertebralis | <anatomy, artery> The sulcus on the superior aspect of the posterior arch of the atlas that transmits the vertebral artery medially toward the foramen magnum. Synonym: sulcus arteriae vertebralis, sulcus for vertebral artery. (05 Mar 2000) |
| sulcus auriculae anterior | A notch between the supratragic tubercle and the crus of the helix. Synonym: incisura anterior auris, anterior auricular groove, auricular notch, sulcus auriculae anterior. (05 Mar 2000) |
| sulcus auriculae posterior | The sulcus between the antitragus and cauda helicis overlying the antitragicohelicine fissure. Synonym: sulcus auriculae posterior. (05 Mar 2000) |
| sulcus basilaris pontis | A median groove on the ventral surface of the pons varolii in which lies the basilar artery. Synonym: sulcus basilaris pontis, basilar sulcus. (05 Mar 2000) |
| sulcus bicipitalis lateralis | at the cubital fossa, the groove separating the biceps brachii and brachialis muscles on the lateral side. Synonym: sulcus bicipitalis lateralis. (05 Mar 2000) |
| sulcus bicipitalis medialis | at the cubital fossa, the groove separating the biceps brachii and brachialis muscles on the medial side. Synonym: sulcus bicipitalis medialis. (05 Mar 2000) |
| sulcus calcanei | The groove on the upper part of the calcaneus, which with a corresponding groove on the talus forms the sinus tarsi. Synonym: sulcus calcanei, calcaneal sulcus, interosseous groove. (05 Mar 2000) |