| LAS | laboratory automation system; lateral amyotrophic sclerosis; laxative abuse syndrome; left anterior-... |
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| LASH | left anterior superior hemiblock |
| LSR | lanthanide shift reagent; lecithin/ sphingomyelin ratio; left superior rectus [muscle]; liver/spleen... |
| LSVC | left superior vena cava |
| MSO | management service organization; medial superior olive; medical staff organization |
| arcus lumbocostalis medialis | <anatomy> One of Haller's arches; a tendinous thickening of the psoas fascia that extends from the body of the first lumbar vertebra to its transverse process on either side. A portion of the diaphragm arises from it. Synonym: ligamentum arcuatum mediale, arcus lumbocostalis medialis, medial lumbocostal arch. (05 Mar 2000) |
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| arcus pedis longitudinalis pars medialis | Formed by the calcaneus, talus, navicular, three cuneiform bones, and the three medial metatarsals. Synonym: arcus pedis longitudinalis pars medialis. (05 Mar 2000) |
| arteriola medialis retinae | An arteriole supplying the part of the retina between the optic disk and the macula. Synonym: arteriola medialis retinae. (05 Mar 2000) |
| bursa subcutanea malleoli medialis | <anatomy> The bursa between the medial malleolus and the skin. Synonym: bursa subcutanea malleoli medialis, subcutaneous bursa of medial malleolus. (05 Mar 2000) |
| radix medialis nervi mediani | <anatomy, nerve> The part of the median nerve coming from the medial cord of the brachial plexus. Synonym: radix medialis nervi mediani. (05 Mar 2000) |
| radix medialis tractus optici | The smaller division of the posterior end of the optic tract that disappears under the medial geniculate body. Synonym: radix medialis tractus optici. (05 Mar 2000) |
| rami profundi arteriae circumflexae femoris medialis | <anatomy, artery> Branch running deep to abductor hallucis, supplying it and the flexor hallucis brevis muscle deep to the artery and the skin of the medial side of the distal foot. Synonym: rami profundi arteriae circumflexae femoris medialis. (05 Mar 2000) |
| vastus medialis | <anatomy, muscle> Origin, medial lip of linea aspera; insertion, tibial tuberosity by way of common tendon of quadriceps femoris and ligamentum patellae; action, extends leg; nerve supply, femoral. Synonym: musculus vastus medialis, medial great muscle, medial vastus muscle, musculus vastus internus. (05 Mar 2000) |
| ramus basalis medialis | <anatomy, artery> A branch of the basal part of inferior lobar branches of the left and right pulmonary arteries. Synonym: ramus basalis medialis. (05 Mar 2000) |
| ramus calcarinus arteriae occipitalis medialis | <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) |
| ramus cutaneus medialis | Nomina Anatomica lists medial cutaneous branch of the following: 1) dorsal branch of thoracic nerves, ramus cutaneus medialis ramorum dorsalium nervorum thoracicorum; 2) dorsal branch of posterior intercostal arteries, ramus cutaneus medialis rami dorsalis arteriarum intercostalium posteriorum III-XI. Synonym: ramus cutaneus medialis. (05 Mar 2000) |
| ramus cutaneus medialis rami dorsalis arteriarum intercostalium posteriorum III-XI | Medial cutaneous branch of dorsal branch of posterior intercostal arteries. See: medial cutaneous branch. (05 Mar 2000) |
| ramus cutaneus medialis ramorum dorsalium nervorum thoracicorum | Medial cutaneous branch of dorsal branch of thoracic nerves. See: medial cutaneous branch. (05 Mar 2000) |
| malleolus medialis | The process at the medial side of the lower end of the tibia, forming the projection of the medial side of the ankle. Synonym: malleolus medialis, inner malleolus, internal malleolus. (05 Mar 2000) |
| ramus medialis ductus hepatici sinistri | Medial branch of left hepatic duct. See: medial branches. (05 Mar 2000) |