| short crus of incus | The short crus of incus; the process of the incus that fits into a depression (fossa incudis) in the epitympanic recess. Synonym: crus breve incudis. (05 Mar 2000) |
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| simple crus of saemicircular duct | The non-ampullary end of the lateral saemicircular duct that opens independently into the utricle. Synonym: crus membranaceum simplex ductus saemicircularis, simple membranous limb of saemicircular duct. (05 Mar 2000) |
| lateral crus | Limb or leg-like portion of a structure, farthest from midline. Synonym: crus laterale, lateral limb. (05 Mar 2000) |
| lateral crus of facial canal | Laterally-placed, posteriorly-directed second portion of the horizontal part of the facial canal. See: horizontal part of facial canal. Synonym: lateral crus of horizontal part of the facial canal. (05 Mar 2000) |
| lateral crus of horizontal part of the facial canal | Laterally-placed, posteriorly-directed second portion of the horizontal part of the facial canal. See: horizontal part of facial canal. Synonym: lateral crus of horizontal part of the facial canal. (05 Mar 2000) |
| lateral crus of the greater alar cartilage of the nose | Portion of cartilage extending laterally and posteriorly in a wing-like fashion, supporting the wing of the nose and keeping the nostril patent. Synonym: crus laterale cartilaginis alaris majoris. (05 Mar 2000) |
| lateral crus of the superficial inguinal ring | Portion of the external oblique aponeurosis which passes lateral to the superficial inguinal ring blending into the inguinal ligament and forming the lateral boundary of the ring. Synonym: crus laterale anuli inguinalis superficialis. (05 Mar 2000) |
| left crus of atrioventricular bundle | The left leg or branch of the atrioventricular bundle which separates from the atrioventricular bundle just below the membranous portion of the interventricular septum to descend the septal wall of the left ventricle and begins to ramify subendocardially. Synonym: crus sinistrum fasciculi atrioventricularis. (05 Mar 2000) |
| left crus of diaphragm | The muscular origin of the diaphragm from the upper two or three lumbar vertebrae that ascends to the left of the aorta to reach the central tendon. Synonym: crus sinistrum diaphragmatis. (05 Mar 2000) |
| HIV long-terminal repeat | Regulatory sequences important for viral replication that are located on each end of the HIV genome. The ltr includes the HIV enhancer, promoter, and other sequences. Specific regions in the ltr include the negative regulatory element (nre), nf-kappa b binding sites , sp1 binding sites, tata box, and trans-acting responsive element (tar). The binding of both cellular and viral proteins to these regions regulates HIV transcription. (12 Dec 1998) |
| segment long spacing | <biochemistry> Abnormal packing pattern of collagen molecules formed if ATP is added to acidic collagen solutions, in which lateral aggregates of molecules are produced. Each aggregate is 300 nm long and the molecules are all in register. If segment long spacing aggregates are overlapped with a quarter stagger, the 67 nm banding pattern of normal fibrils is reconstituted. Acronym: SLS (18 Nov 1997) |
| insurance, long-term care | Health insurance to provide full or partial coverage for long-term home care services or for long-term nursing care provided in a residential facility such as a nursing home. (12 Dec 1998) |
| long | 1. Drawn out in a line, or in the direction of length; protracted; extended; as, a long line; opposed to short, and distinguished from broad or wide. 2. Drawn out or extended in time; continued through a considerable tine, or to a great length; as, a long series of events; a long debate; a long drama; a long history; a long book. 3. Slow in passing; causing weariness by length or duration; lingering; as, long hours of watching. 4. Occurring or coming after an extended interval; distant in time; far away. "The we may us reserve both fresh and strong Against the tournament, which is not long." (Spenser) 5. Extended to any specified measure; of a specified length; as, a span long; a yard long; a mile long, that is, extended to the measure of a mile, etc. 6. Far-reaching; extensive. " Long views." 7. Prolonged, or relatively more prolonged, in utterance; said of vowels and syllables. See Short, 13, and Guide to Pronunciation, 22. Long is used as a prefix in a large number of compound adjectives which are mostly of obvious meaning; as, long-armed, long-beaked, long-haired, long-horned, long-necked, long-sleeved, long-tailed, long- worded, etc. In the long run, in the whole course of things taken together; in the ultimate result; eventually. Long clam, to hold stock for a rise in price, or to have a contract under which one can demand stock on or before a certain day at a stipulated price; opposed to short in such phrases as, to be short of stock, to sell short, etc. See Short. To have a long head, to have a farseeing or sagacious mind. Origin: AS. Long, lang; akin to OS, OFries, D, & G. Lang, Icel. Langr, Sw. Lang, Dan. Lang, Goth. Laggs, L.longus. Cf. Length, Ling a fish, Linger, Lunge, Purloin. 1. To a great extent in apace; as, a long drawn out line. 2. To a great extent in time; during a long time. "They that tarry long at the wine." (Prov. Xxiii. 30) "When the trumpet soundeth long." (Ex. Xix. 13) 3. at a point of duration far distant, either prior or posterior; as, not long before; not long after; long before the foundation of Rome; long after the Conquest. 4. Through the whole extent or duration. "The bird of dawning singeth all night long." (Shak) 5. Through an extent of time, more or less; only in question; as, how long will you be gone? Origin: AS. Lance. Source: Websters Dictionary (01 Mar 1998) |
| long abductor muscle of thumb | <anatomy> Origin, interosseous membrane and posterior surfaces of radius and ulna; insertion, lateral side of base of first metacarpal bone; action, abducts and assists in extending thumb; nerve supply, radial. Synonym: musculus abductor pollicis longus, long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis. (05 Mar 2000) |
| long-acting thyroid stimulator | <endocrinology, immunology> A thyroid stimulating antibody which is directed against a receptor for TSH on the thyroid gland. This antibody acts like TSH and stimulates the thyroid to produce excessive amounts of thyroid hormone. The presence of this antibody generally indicates Grave's disease (hyperthyroidism). Acronym: LATS (15 Nov 1997) |