| lumbar plexus | A nervous plexus, formed by the ventral rami of the first four lumbar nerves; it lies in the substance of the psoas muscle, a lymphatic plexus formed of about twenty lymph nodes and connecting vessels situated along the lower portion of the aorta and the common iliac vessels. Synonym: plexus lumbalis. (05 Mar 2000) |
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| lumbar puncture | A diagnostic procedure where a sterile needle is introduced into the lower spine (L2) to collect cerebrospinal fluid for diagnostic purposes. Chemical analysis, cellular analysis and CSF pressure can all be measured with this procedure. This test can aid in the diagnosis of meningitis, subarachnoid haemorrhage and multiple sclerosis. (27 Sep 1997) |
| lumbar puncture needle | A needle, provided with a stylet, for entering the spinal canal or cisterna magna, with a bore of at least 1 mm and 40 mm or more in length. (05 Mar 2000) |
| lumbar quadrate muscle | <anatomy, muscle> Origin, iliac crest, iliolumbar ligament, and transverse processes of lower lumbar vertebrae; insertion, twelfth rib and transverse processes of upper lumbar vertebrae; action, abducts trunk; nerve supply, ventral primary rami of upper lumbar spinal nerves. Synonym: musculus quadratus lumborum, lumbar quadrate muscle, quadrate muscle of loins. (05 Mar 2000) |
| lumbar radiculopathy | <neurology, orthopaedics> A herniated intervertebral disk (nucleus pulposus) is one which has become displaced (prolapsed) from its normal position in between the vertebral bodies of the spine. Herniated disks often impinge on nearby nerve structures resulting in pain and neurologic symptoms. A clinical situation where the radicular nerve (nerve root) is compressed by the prolapsed disk is referred to as a radiculopathy. This problem tends to occur most commonly in the cervical and lumbar spine. Origin: Gr. Pathos = disease (27 Sep 1997) |
| lumbar region | The region of the back lateral to the vertebral region and between the rib cage and the pelvis. Synonym: regio lumbalis. (05 Mar 2000) |
| lumbar rheumatism | <symptom> Pain in the lumbar region. Origin: L. Lumbus = loin (18 Nov 1997) |
| lumbar rib | An occasional rib articulating with the transverse process of the first lumbar vertebra. (05 Mar 2000) |
| lumbar rotator muscles | The rotator muscles of the lumbar vertebrae. Synonym: musculi rotatores lumborum, lumbar rotator muscles. (05 Mar 2000) |
| lumbar segments of spinal cord | The five lumbar segments of the spinal cord which give rise to the five pairs of lumbar spinal nerves and constitute the lumbar part of the spinal cord. Synonym: segmenta medullae spinalis lumbaria. (05 Mar 2000) |
| lumbar splanchnic nerves | Branches from the lumbar sympathetic trunks that pass anteriorly to convey presynaptic sympathetic fibres to, and visceral afferents from, the coeliac, intermesenteric, aortic, and superior hypogastric plexuses. Synonym: nervi splanchnici lumbales. (05 Mar 2000) |
| lumbar triangle | An area in the posterior abdominal wall bounded by the edges of the latissimus dorsi and external oblique muscles and the iliac crest; herniations occasionally occur here. Synonym: trigonum lumbale, Petit's lumbar triangle. (05 Mar 2000) |
| lumbar trunks | Two lymphatic ducts conveying lymph from the lower limbs, pelvic viscera and walls, large intestine, kidneys, and suprarenal glands; they discharge into the cisterna chyli. Synonym: trunci lumbales. (05 Mar 2000) |
| lumbar veins | Five in number, these veins accompany the lumbar arteries, drain the posterior body wall and the lumbar vertebral venous plexuses, and terminate anteriorly as follows: the first and second in the ascending lumbar vein, the third and fourth in the inferior vena cava, and the fifth in the iliolumbar vein; all communicate via the ascending lumbar veins. Synonym: venae lumbales. (05 Mar 2000) |
| lumbar vertebrae | The vertebrae, usually five in number, located in the lumbar region of the back. Synonym: vertebrae lumbales. (05 Mar 2000) |
Synonyms : Central Nervous System Lupus, Central Nervous System Systemic Lupus Erythematosis, Lupus Meningoencephalitis, Systemic Lupus Erythematosis, Central Nervous System, Lupus Meningoencephalitides, Meningoencephalitides, Lupus, Meningoencephalitis, Lupus
Synonyms : Luria Nebraska Neuropsychologic Battery, Luria Nebraska Neuropsychological Battery, Luria-Nebraska Neuropsychologic Battery, Neuropsychological Battery, Luria-Nebraska, Battery, Luria-Nebraska Neuropsychological, Neuropsychologic Battery, Luria-Nebraska
Synonyms : Granulosa-Luteal Cells, Granulosa-Lutein Cells, Large Luteal Cells, Small Luteal Cells, Theca-Luteal cells, Theca-Lutein Cells, Cell, Granulosa-Luteal, Cell, Granulosa-Lutein, Cell, Large Luteal, Cell, Luteal, Cell, Lutein, Cell, Small Luteal, Cell, Theca-Lutein
Synonyms : Phase, Luteal, Phase, Postovulatory, Secretory Phase, Menstrual
Synonyms : Lutein F, Lutein G, beta, epsilon-Carotene-3, 3'-Diol, (3R, 3'R, 6'S)-, beta, epsilon-Carotene-3, 3'-diol, (3S, 3'R, 6'S)-, gamma Lutein, Lutein, gamma
| lutetium |
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
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| luting |
lute: a substance for packing a joint or coating a porous surface to make it impervious to gas or liquid
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| lubricant |
a substance capable of reducing friction by making surfaces smooth or slippery
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| lucent |
aglow(p): softly bright or radiant; "a house aglow with lights"; "glowing embers"; "lambent tongues of flame"; "the lucent moon"; "a sky luminous with stars"
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| lucid |
limpid: (of language) transparently clear; easily understandable; "writes in a limpid style"; "lucid directions"; "a luculent oration"- Robert Burton; "pellucid prose"; "a crystal clear explanation"; "a perspicuous argument" having a clear mind; "a lucid moment in his madness" coherent: capable of thinking and expressing yourself in a clear and consistent manner; "a lucid thinker"; "she was more coherent than she had been just after the accident" crystalline: transmitting light; able to be seen through with clarity; "the cold crystalline water of melted snow"; "crystal clear skies"; "could see the sand on the bottom of the limpid pool"; "lucid air"; "a pellucid brook"; "transparent crystal"
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| LU | a Baltic-Finnic language |
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| LU | broadly or extravagantly humorous |
| LU | completely devoid of wisdom or good sense |
| LU | so as to arouse or deserve laughter |
| LU | (British) a simple board game in which players move counters according to the throw of dice |
| LU | Austrian physicist who contributed to the kinetic theory of gases (1844-1906) |
| LU | British philosopher born in Austria |
| LU | United States architect (born in Germany) who built unornamented steel frame and glass skyscrapers (1886-1969) |
| LU | German composer of instrumental music (especially symphonic and chamber music) |
| LU | British philosopher born in Austria |
| LU | a genus of Hominidae |
| LU | sailing close to the wind |