| LSR | lanthanide shift reagent; lecithin/ sphingomyelin ratio; left superior rectus [muscle]; liver/spleen... |
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| LSVC | left superior vena cava |
| MSO | management service organization; medial superior olive; medical staff organization |
| OAISO | overaction of the ipsilateral superior oblique |
| PASVR | pulmonary anomalous superior venous return |
| vena mesenterica superior | <anatomy, vein> Begins at the ileum in the right iliac fossa, ascends in the root of the mesentery, and unites behind the pancreas with the splenic vein to form the hepatic portal vein. Synonym: vena mesenterica superior. (05 Mar 2000) |
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| vena ophthalmica superior | <anatomy, vein> Begins anteriorly from the nasofrontal vein, passes along the upper part of the medial wall of the orbit, passes through the superior orbital fissure, to empty into the cavernous sinus. Synonym: vena ophthalmica superior. (05 Mar 2000) |
| vena pulmonalis superior dextra | <anatomy, vein> The vein returning oxygenated blood from the superior and middle lobes of the right lung to the left atrium. Synonym: vena pulmonalis superior dextra. (05 Mar 2000) |
| vena pulmonalis superior sinistra | The vein returning oxygenated blood from the left superior lobe of the lung to the left atrium. Synonym: vena pulmonalis superior sinistra. (05 Mar 2000) |
| vena rectalis superior | <anatomy, vein> It drains the greater part of the rectal venous plexus, and ascends between the layers of the mesorectum to the brim of the pelvis, where it becomes the inferior mesenteric vein. As a tributary of the portal vein, it forms a portocaval anastomosis with the middle and inferior rectal veins (caval tributaries) via the rectal venous plexus. Synonym: vena rectalis superior. (05 Mar 2000) |
| vena thalamostriata superior | <anatomy, vein> A long vein passing forward in the groove between the thalamus and caudate nucleus, covered by the lamina affixa, receiving the transverse caudate veins along its lateral side, and joining at the caudal wall of Monro's foramen with the choroidal vein and vein of septum pellucidum to form the internal cerebral vein. Synonym: vena terminalis, vena thalamostriata superior, terminal vein, vein of corpus striatum. (05 Mar 2000) |
| vena thyroidea superior | <anatomy, vein> Receives blood from the upper part of the thyroid gland and larynx, accompanies the artery of the same name, and empties into the internal jugular vein. Synonym: vena thyroidea superior. (05 Mar 2000) |
| vena vermis superior | A vein draining part of the superior part of the cerebellum; it runs on the superior surface of the vermis to terminate in the internal cerebral vein. Synonym: vena vermis superior. (05 Mar 2000) |
| venter superior musculi omohyoidei | <anatomy> The superior belly of the omohyoid muscle, attached to the hyoid bone. Synonym: venter superior musculi omohyoidei. (05 Mar 2000) |
| venula macularis superior | A small tributary of the central vein of the retina that drains the upper part of the macula. Synonym: venula macularis superior. (05 Mar 2000) |
| venula nasalis retinae superior | The small vein that drains blood from the upper medial (nasal) part of the retina; it joins the central vein. Synonym: venula nasalis retinae superior. (05 Mar 2000) |
| venula temporalis retinae superior | The venule that passes from the upper lateral (temporal) part of the retina to join the central vein. Synonym: venula temporalis retinae superior. (05 Mar 2000) |
| margo superior cerebri | The curved margin of the cerebral hemisphere at the junction of the superolateral and medial surfaces. Synonym: margo superomedialis, superomedial margin. (05 Mar 2000) |
| margo superior glandulae suprarenalis | The border of the suprarenal gland at the superior junction of the anterior and posterior surfaces. Synonym: margo superior glandulae suprarenalis. (05 Mar 2000) |
| margo superior pancreatis | The uppermost border of the body of the pancreas that separates the anterior and posterior surfaces. Synonym: margo superior pancreatis. (05 Mar 2000) |