| cerebrovascular accident | <neurology> This general term encompasses such problems as stroke and cerebral haemorrhage. Acronym: CVA (12 Jan 1998) |
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| cerebrovascular accident prevention | In many cases, a person may have a transient ischemic attack (TIA). A neurological event with the symptoms of a stroke, but the symptoms go away within a short period of time. This is often caused by the narrowing or ulceration of the carotid arteries (the major arteries in the neck that supply blood to the brain). If not treated, there is a high risk of having a major stroke in the future. If you suspect a TIA, you should seek medical attention right away. An operation to clean out the carotid artery and restore normal blood flow through the artery (a carotid endarterectomy) markedly reduces the incidence of a subsequent stroke. In other cases, when a person has a narrowed carotid artery, but no symptoms, the risk of having a stroke can be reduced with medications such as aspirin and ticlopidine (TICLID). These medications act by partially blocking the function of blood elements, called platelets, which assist blood clotting. (12 Dec 1998) |
| cerebrovascular circulation | The circulation of blood through the vessels of the brain. (12 Dec 1998) |
| cerebrovascular disease | <cardiology, pathology> A general term which encompasses a variety of diseases which affect (via the occlusive effects of atherosclerosis) the arteries which supply the brain. See: stroke. (12 Jan 1998) |
| cerebrum | <anatomy> The portion of the brain (frontal lobes) where thought and higher function reside. (12 Jan 1998) |
| cerecloth | Gauze or cheese cloth impregnated with wax containing an antiseptic; used in surgical dressings. Origin: L. Cera, wax (05 Mar 2000) |
| ceremonial behaviour | A series of actions, sometimes symbolic actions which may be associated with a behaviour pattern, and are often indispensable to its performance. (12 Dec 1998) |
| Cerenkov | (Cherenkov) Pavel A., Russian physicist and Nobel laureate, *1904. See: Cerenkov radiation. (05 Mar 2000) |
| Cerenkov radiation | Light given off by a transparent medium when a high energy particle speeds through it at a velocity greater than that of light in that medium. (05 Mar 2000) |
| cereolysin | <protein> Cytolytic (haemolytic) toxin released by Bacillus cereus. Inactivated by oxygen, reactivated by thiol reduction (hence thiol activated cytolysin). Binds to cholesterol in the plasma membrane and rearrangement of the toxin cholesterol complexes in the membrane leads to altered permeability. (18 Nov 1997) |
| ceresin | A natural mixture of hydrocarbons of high molecular weight; a substitute for beeswax, also used in dentistry for impressions. Synonym: cerin, cerosin, earth wax, mineral wax, purified ozokerite. (05 Mar 2000) |
| cerin | A natural mixture of hydrocarbons of high molecular weight; a substitute for beeswax, also used in dentistry for impressions. Synonym: cerin, cerosin, earth wax, mineral wax, purified ozokerite. (05 Mar 2000) |
| Cerithidea | A genus of marine and brackish water operculate (prosobranch) snails that serve as first intermediate hosts of a number of trematodes. Cerithidea cingulata serves as host for Heterophyes heterophyes in Japan and Southeast Asia; Cerithidea scalariformis for cercariae that induce swimmer's itch in the southeastern U.S. From Florida to Texas. (05 Mar 2000) |
| cerium | <chemical> An element of the rare earth family of metals. It has the atomic symbol ce, atomic number 58, and atomic weight 140.12. Cerium is a malleable metal used in industrial applications. Chemical name: Cerium (12 Dec 1998) |
| cerium isotopes | Stable cerium atoms that have the same atomic number as the element cerium, but differ in atomic weight. Ce-136, 138, and 142 are stable cerium isotopes. (12 Dec 1998) |