| SBO | small bowel obstruction; spina bifida occulta |
|---|---|
| SVCO | superior vena-caval obstruction |
| TO | old tuberculin; oral temperature; original tuberculin; target organ; telephone order; thoracic ortho... |
| UAO | upper airway obstruction |
| UTO | upper tibial osteotomy; urinary tract obstruction |
| anterior conjunctival artery | <anatomy, artery> One of a number of small branches of the anterior ciliary arteries that supplies the conjunctiva. Synonym: arteria conjunctivalis anterior, conjunctival arteries. (05 Mar 2000) |
|---|---|
| anterior descending artery | <anatomy, artery> Anterior interventricular branch of left coronary artery. Terminal branch (with circumflex coronary artery) of left coronary artery; descends in anterior interventricular groove to apex, anastomosing with posterior interventricular artery. Supplies most of sternal aspect of ventricles and anterior two-thirds of interventricular septum, including atrioventricular bundle of conducting tissue. Synonym: ramus interventricularis anterior arteriae coronariae sinistrae, anterior descending artery. (05 Mar 2000) |
| anterior ethmoidal artery | <anatomy, artery> Origin, ophthalmic; distribution, cerebral membranes in anterior cranial fossa, anterior ethmoidal cells, frontal sinus, anterior upper part of nasal mucous membrane, skin of dorsum of nose. Synonym: arteria ethmoidalis anterior. (05 Mar 2000) |
| anterior humeral circumflex artery | <anatomy, artery> Origin, axillary; distribution, shoulder joint and biceps muscle; anastomoses, posterior circumflex humeral artery. Synonym: arteria circumflexa humeri anterior, anterior humeral circumflex artery. (05 Mar 2000) |
| anterior inferior cerebellar artery | <anatomy, artery> Origin, basilar; distribution, lower surface of lateral lobes of cerebellum, choroid plexus in cerebellopontine angle; anastomoses, posterior inferior cerebellar; usual source of labyrinthine artery. Synonym: arteria cerebelli inferior anterior. (05 Mar 2000) |
| anterior inferior segmental artery of kidney | Origin, anterior branch of renal. See: segmental arteries of kidney. Synonym: arteria segmenti anterioris inferioris renis, artery of anterior {inferior segment of kidney}. (05 Mar 2000) |
| anterior intercostal branches of internal thoracic artery | One of the arteries supplying the anterior portions of the intercostal spaces of the thoracic wall. Anterior intercostal arteries 1-6 arise as branches of the internal thoracic artery; 7-11 arise as branches of the musculophrenic artery. Synonym: rami intercostales anteriores, rami intercostalis anteriores arteria thoracica interna. (05 Mar 2000) |
| anterior interosseous artery | <anatomy, artery> Origin, common interosseous; distribution, deep parts of the forearm anteriorly; anastomoses, posterior interosseous. Synonym: arteria interossea anterior, arteria interossea volaris, volar interosseous artery. (05 Mar 2000) |
| anterior interventricular artery | <anatomy, artery> Anterior interventricular branch of left coronary artery. Terminal branch (with circumflex coronary artery) of left coronary artery; descends in anterior interventricular groove to apex, anastomosing with posterior interventricular artery. Supplies most of sternal aspect of ventricles and anterior two-thirds of interventricular septum, including atrioventricular bundle of conducting tissue. Synonym: ramus interventricularis anterior arteriae coronariae sinistrae, anterior descending artery. (05 Mar 2000) |
| anterior lateral malleolar artery | <anatomy, artery> Origin, anterior tibial; distribution, ankle joint; anastomoses, peroneal, lateral tarsal. Synonym: arteria malleolaris anterior lateralis. (05 Mar 2000) |
| anterior medial malleolar artery | <anatomy, artery> Origin, anterior tibial; distribution, ankle joint and neighboring integument; anastomoses, branches of posterior tibial. Synonym: arteria malleolaris anterior medialis. (05 Mar 2000) |
| anterior meningeal artery | <anatomy, artery> Origin, anterior ethmoidal; distribution, meninges in anterior cranial fossa; anastomoses, branches of middle meningeal and meningeal branches of internal carotid and lacrimal. Synonym: arteria meningea anterior. (05 Mar 2000) |
| anterior parietal artery | <anatomy, artery> The branch distributed to the anterior part of the parietal lobe. Synonym: arteria parietales anterior. (05 Mar 2000) |
| anterior peroneal artery | See: perforating branches. (05 Mar 2000) |
| anterior scrotal branch of external pudendal artery | <anatomy, artery> Distribution, skin of anterior scrotum; anastomoses, posterior scrotal branches from internal pudendal artery. Synonym: rami scrotales anteriores arteriae pudendae externae. (05 Mar 2000) |