| arachnidism | The condition produced by the bite of a venomous spider; spider envenomation. (12 Dec 1998) |
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| arachnidium | <zoology> The glandular organ in which the material for the web of spiders is secreted. Origin: NL. See Arachnida. Source: Websters Dictionary (01 Mar 1998) |
| arachnitis | <medicine> Inflammation of the arachnoid membrane. Origin: Gr. +. Source: Websters Dictionary (01 Mar 1998) |
| arachnobutyrophobia | <psychology> Fear of peanut butter. Really !!. Origin: Gr. Phobos = fear (16 Mar 1998) |
| arachnodactyly | <clinical sign> A skeletal disorder where the patient has unusually long, thin bones, especially noticeable in the fingers and toes. (09 Oct 1997) |
| arachnoid | Like a cobweb, covered with or consisting of soft fibres or hairs so entangled as to give a cobwebby appearance. (09 Oct 1997) |
| arachnoid cyst | A fluid-filled cyst lined with arachnoid membrane, frequently situated near the lateral aspect of the fissure of Sylvius; usually congenital in origin. Synonym: leptomeningeal cyst. (05 Mar 2000) |
| arachnoid cysts | Fluid-filled sacs between the layers of the pia mater and arachnoid. These lesions, which often mimic intracranial neoplasms, present clinically at all ages but are probably congenital in origin. (12 Dec 1998) |
| arachnoid foramen | The large midline opening in the posterior inferior part of the roof of the fourth ventricle, connecting the ventricle with the cerebellomedullary cistern. Synonym: apertura mediana ventriculi quarti, arachnoid foramen, Magendie's foramen, median aperture of the fourth ventricle. (05 Mar 2000) |
| arachnoid 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) |
| arachnoid mater | Like a cobweb, covered with or consisting of soft fibres or hairs so entangled as to give a cobwebby appearance. (09 Oct 1997) |
| arachnoid mater cranialis | That portion of the arachnoid which lies within the cranial cavity and surrounds the brain and the cranial portion of the subarachnoid space. In several sites it is relatively widely-separated from the pia mater, creating the cranial subarachnoid cisterns. Synonym: arachnoid mater cranialis, arachnoid mater encephali, cerebral part of arachnoid. (05 Mar 2000) |
| arachnoid mater encephali | An alternate term for arachnoid of brain. (05 Mar 2000) |
| arachnoid membrane | Like a cobweb, covered with or consisting of soft fibres or hairs so entangled as to give a cobwebby appearance. (09 Oct 1997) |
| arachnoid of brain | That portion of the arachnoid which lies within the cranial cavity and surrounds the brain and the cranial portion of the subarachnoid space. In several sites it is relatively widely-separated from the pia mater, creating the cranial subarachnoid cisterns. Synonym: arachnoid mater cranialis, arachnoid mater encephali, cerebral part of arachnoid. (05 Mar 2000) |
Synonyms : Arachnid Vector, Vector, Arachnid, Vectors, Arachnid
Synonyms : Arachnids
Synonyms : Necrotic Arachnidism, Arachnidism, Necrotic, Bite, Spider, Bites, Spider, Spider Bites
Synonyms : Arachnoids
Synonyms : Intracranial Arachnoid Cysts, Arachnoid Cyst, Arachnoid Cyst, Intracranial, Arachnoid Cysts, Intracranial, Arachnoid Diverticulas, Cyst, Arachnoid, Cyst, Intracranial Arachnoid, Cyst, Leptomeningeal, Cysts, Arachnoid, Cysts, Intracranial Arachnoid
| arachnoiditis |
Inflammation of the middle (arachnoid mater) of 3 linings of the spinal cord and the subarachnoid space containing the cerebrospinal fluid.
Ãâó: www.bdid.com/termsa.htm
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| arachnoid |
[Greek, arachne = spider + -oeides = form] spider web-like meningial layer covering central nervous system. Lies between tough outer duramater and fine piamater.
Ãâó: embryology.med.unsw.edu.au/Notes/Index/A.htm
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| arachnoid |
(Gr. spider-like) Mater: The middle of the three meninges enclosing the brain and spinal cord. It is a thin, translucent membrane closely adherent to the dura mater. Trabeculae extend from its inner surface across the subarachnoid spa ce to the pia. Also forms the outer membrane of the leptomeninges.
Ãâó: www.umanitoba.ca/faculties/medicine/anatomy/neuro/...
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| arachnoid villi |
Microscopic tufts of pia-arachnoid mater that pierce the dura and open into venous sinuses, lacunae or extradural veins. They permit unidirectional flow of cerebrospinal fluid from the subarachnoid space to the venous system.
Ãâó: www.umanitoba.ca/faculties/medicine/anatomy/neuro/...
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| arachnoid membrane |
The middle menynx.
Ãâó: www.ualberta.ca/~neuro/OnlineIntro/glossary.htm
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| ARA | air-breathing arthropods characterized by simple eyes and four pairs of legs |
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| ARA | the middle of the 3 meninges |
| ARA | (zoology) relating to or resembling a member of the class Arachnida |
| ARA | the middle of the 3 meninges |
| ARA | a region of northeastern Spain |
| ARA | French writer who generalized surrealism to literature (1897-1982) |
| ARA | a mineral form of crystalline calcium carbonate |
| ARA | a river in central Brazil that flows generally northward (with many falls) to join the Tocantins River |
| ARA | a river in central Brazil that flows generally northward (with many falls) to join the Tocantins River |
| ARA | a river in central Brazil that flows generally northward (with many falls) to join the Tocantins River |
| ARA | a river in central Brazil that flows generally northward (with many falls) to join the Tocantins River |
| ARA | any of various strong liquors distilled from the fermented sap of toddy palms or from fermented molasses |
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