| LASH | left anterior superior hemiblock |
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| 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 |
| OAISO | overaction of the ipsilateral superior oblique |
| inferior basal vein | <anatomy, vein> Tributary to the common basal vein draining the medial and posterior part of the inferior lobe in each lung. Synonym: vena basalis inferior. (05 Mar 2000) |
|---|---|
| inferior belly of omohyoid muscle | <anatomy> The inferior belly of the omohyoid muscle, attached to the superior border of the scapula. Synonym: venter inferior musculi omohyoidei. (05 Mar 2000) |
| inferior border | The caudal or lowermost margin of a structure. Synonym: inferior margin, margo inferior. (05 Mar 2000) |
| inferior border of liver | The sharp border of the liver that separates the diaphragmatic and visceral surfaces. Synonym: margo inferior hepatis. (05 Mar 2000) |
| inferior border of lung | The sharp border of the lung that separates the diaphragmatic surface from the costal and mediastinal surfaces. Synonym: margo inferior pulmonis. (05 Mar 2000) |
| inferior border of pancreas | The border of the pancreas separating the inferior and posterior surfaces. Synonym: margo inferior pancreatis, margo inferior splenis. (05 Mar 2000) |
| inferior branch | A branch directed downward (caudally) or which is lowly-placed, usually in contrast with another branch (superior branch) which is directed upward (rostrally) or is highly-placed. Synonym: ramus inferior. (05 Mar 2000) |
| inferior branches of transverse cervical nerve | <anatomy, nerve> Branch of transverse cervical nerve providing cutaneous innervation in lower part of anterior triangle of neck. Synonym: rami inferiores nervi transversi cervicalis [colli]. (05 Mar 2000) |
| inferior branch of oculomotor nerve | <anatomy, nerve> Branch of oculomotor nerve providing motor branches to medial and inferior rectus and inferior oblique muscles and carrying presynaptic parasympathetic fibres which pass to the ciliary ganglion via the parasympathetic root. Synonym: ramus inferior nervi oculomotorii. (05 Mar 2000) |
| inferior branch of pubic bone | inferior branch of pubic bone |
| inferior bursa of biceps femoris | The bursa between the tendon of the biceps femoris and the fibular collateral ligament of the knee joint. Synonym: bursa subtendinea musculi bicipitis femoris inferior. (05 Mar 2000) |
| inferior calcaneonavicular ligament | <anatomy> A dense fibroelastic ligament that extends from the sustentaculum tali to the plantar surface of the navicular bone; it supports the head of the talus. Synonym: ligamentum calcaneonaviculare plantare, inferior calcaneonavicular ligament, spring ligament. (05 Mar 2000) |
| inferior cardiac vein | <anatomy, vein> Begins at the apex of the heart (where it anastomoses with the great cardiac vein), and ascends within the posterior interventricular sulcus to the coronary sinus. Synonym: vena cordis media, inferior cardiac vein. (05 Mar 2000) |
| inferior carotid triangle | The triangle bounded by the sternocleidomastoid muscle, the superior belly of the omohyoid muscle, and the anterior midline of the neck; the infrahyoid muscles occupy most of it. Synonym: trigonum musculare, trigonum omotracheale, inferior carotid triangle, omotracheal triangle, tracheal triangle. (05 Mar 2000) |
| inferior cerebellar peduncle | Large paired bundles of nerve fibres which develop on the dorsolateral surfaces of the upper medulla, extend under the lateral recesses of the rhomboid fossa and curve dorsally into the cerebellum medial to the middle cerebellar peduncle; composed of a larger (lateral) bundle, the restiform body, and a small (medial) bundle, the juxtarestiform body. Fibres forming this composite bundle originate from spinal neurons and medullary relay nuclei. The largest constituent (restiform body) is crossed fibres from the inferior olive; it also contains the dorsal spinocerebellar tract and cerebellar projections from the lateral reticular nucleus, the accessory cuneate nucleus, the paramedian reticular nuclei and the perihypoglossal nuclei. Vestibulocerebellar fibres are placed medially in the inferior cerebellar peduncle and are usually separately identified as the juxtarestiform body. Synonym: pedunculus cerebellaris inferior. (05 Mar 2000) |