| arachnoid of spinal cord | That portion of the arachnoid which lies within the vertebral canal and surrounds the spinal cord and the vertebral portion of the subarachnoid space. It extends from the foramen magnum above to the S-2 vertebral level. Since the spinal cord ends at the L-2 vertebral level, a wide separation occurs between the arachnoid and pia mater, the lumbar cistern, filled with cerebrospinal fluid in which the cauda equina is suspended. Synonym: arachnoidea mater spinalis, spinal part of arachnoid. (05 Mar 2000) |
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| arachnoid trabecula | Fine, delicate strands composed of fibroblast and extracellular collagen that traverse the subarachnoid space between the arachnoid mater, which is attached to the dura, and the pia mater, which is adherent to the surface of the brain. (05 Mar 2000) |
| arachnoid villi | Tufted prolongations of pia-arachnoid that protrude through the meningeal layer of the dura mater and have a thin limiting membrane; collections of arachnoid villus form arachnoid granulations that lie in venous lacunae at the margin of the superior sagittal sinus; the spongy tissue of the a. Villus contains tubules that serve as one-way valves for transfer of cerebrospinal fluid from the subarachnoid space to the venous system. Both a. Villus and the granulations formed from them are major sites of fluid transfer. See: arachnoid granulations. (05 Mar 2000) |
| arachnoidal | <anatomy> Pertaining to the arachnoid membrane; arachnoid. Source: Websters Dictionary (01 Mar 1998) |
| arachnoidal granulations | Tufted prolongations of pia-arachnoid, composed of numerous arachnoid villi that penetrate dural venous sinuses and effect transfer of cerebrospinal fluid to the venous system. at advanced age these are more numerous and tend to calcify. Synonym: granulationes arachnoideales, arachnoidal granulations, pacchionian bodies, pacchionian corpuscles, pacchionian glands, pacchionian granulations. (05 Mar 2000) |
| arachnoidea | <zoology> Same as Arachnida. Source: Websters Dictionary (01 Mar 1998) |
| arachnoidea mater spinalis | That portion of the arachnoid which lies within the vertebral canal and surrounds the spinal cord and the vertebral portion of the subarachnoid space. It extends from the foramen magnum above to the S-2 vertebral level. Since the spinal cord ends at the L-2 vertebral level, a wide separation occurs between the arachnoid and pia mater, the lumbar cistern, filled with cerebrospinal fluid in which the cauda equina is suspended. Synonym: arachnoidea mater spinalis, spinal part of arachnoid. (05 Mar 2000) |
| arachnoiditis | <pathology> Inflammation of the arachnoid membrane and adjacent subarachnoid space. (27 Sep 1997) |
| arachnological | Of or pertaining to arachnology. Source: Websters Dictionary (01 Mar 1998) |
| arachnologist | One who is versed in, or studies, arachnology. Source: Websters Dictionary (01 Mar 1998) |
| arachnology | <study> The department of zoology which treats of spiders and other Arachnida. Origin: Gr. Spider. (04 Mar 1998) |
| arachnolysin | A haemolytic substance in the venom of certain spiders. (05 Mar 2000) |
| arachnophobia | <psychology> Morbid fear of spiders. Synonym: arachnophobia. Origin: G. Arachne, spider, + phobos, fear (05 Mar 2000) |
| aragonite | <chemical> A mineral identical in composition with calcite or carbonate of lime, but differing from it in its crystalline form and some of its physical characters. Origin: From Aragon, in Spain. Source: Websters Dictionary (01 Mar 1998) |
| araguato | <zoology> A South American monkey, the ursine howler (Mycetes ursinus). See Howler. Origin: Native name. Source: Websters Dictionary (01 Mar 1998) |
Synonyms : Arachnoid Membrane Inflammation, Inflammation, Arachnoid Membrane, Arachnoid Membrane Inflammations, Arachnoiditides, Inflammations, Arachnoid Membrane
Synonyms :
Synonyms : Polyscias
| arachnoiditis |
spidery fingers (associated with joint hypermobility).
출처: www.arc.org.uk/about_arth/glossary.htm
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| arachnodactyly |
Long slender fingers - occurs particularly in Marfan's syndrome.
출처: www.ilar.org/Glossary/Glossary_a.htm
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| arachnoiditis |
Fibrosis (rather than inflammation) of the arachnoid membrane with scarring around the theca and nerve roots. May be associated with chronic back pain. It may follow spinal surgery and has also been associated with the use of Myodil (an X-ray contrast medium) in the past.
출처: www.ilar.org/Glossary/Glossary_a.htm
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| arachidonic acid |
An essential unsaturated fatty acid that's a precursor to regulatory substances in our bodies, such as leukotrienes, thromboxanes, and prostaglandins. It is found in animal fats such as liver and egg yolks and can also be created in our bodies from linoleic acid.
출처: www.nutros.com/nsr-05zzz.html
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| arachidonic acid |
A 20-carbon, 4 times unsaturated fatty acid made from the essential linoleic acid by enzymes in our body, and also found in animal foods (meat, eggs dairy). It is the parent compound from which series 2 prostaglandins are made. Arc of Senility
출처: www.findhealer.com/glossary/A.php3
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| ARA | a lake east of the Caspian Sea lying between Kazakhstan and Uzbekistan |
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| ARA | Araceae |
| ARA | any of various plants of the genus Aralia |
| ARA | deciduous clump-forming Asian shrub or small tree |
| ARA | bristly herb of eastern and central North America having black fruit and medicinal bark |
| ARA | common perennial herb having aromatic roots used as a substitute for sarsaparilla |
| ARA | unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels |
| ARA | small deciduous clump-forming tree or shrub of eastern United States |
| ARA | similar to American angelica tree but less prickly |
| ARA | mostly tropical trees and shrubs and lianas: ginseng |
| ARA | the biblical name for ancient Syria |
| ARA | Soviet composer (born in Georgia) whose works are romantic and reflect his interest in folk music (1903-1978) |