| Bell, John | <person> Scottish surgeon and anatomist, 1763-1820. See: Bell's muscle. (05 Mar 2000) |
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| Bell, Sir Charles | <person> Scottish surgeon, anatomist, and physiologist, 1774-1842. See: Bell's law, Bell-Magendie law, Bell's respiratory nerve, Bell's palsy, Bell's spasm, external respiratory nerve of Bell. (05 Mar 2000) |
| bell-crowned | Denoting a tooth the crown of which has a cross-sectional diameter much greater than that of the neck. (05 Mar 2000) |
| bell-faced | Having the striking surface convex; said of hammers. Source: Websters Dictionary (01 Mar 1998) |
| Bell-Magendie law | The ventral spinal roots are motor, the dorsal are sensory. Synonym: Bell-Magendie law, Magendie's law. (05 Mar 2000) |
| bell-shaped crown | A crown of a tooth with an exaggerated occlusogingival contour; human deciduous molars typify the bell-shaped crown. (05 Mar 2000) |
| belladonna | <botany> An herbaceous European plant (Atropa belladonna) with reddish bell-shaped flowers and shining black berries. The whole plant and its fruit are very poisonous, and the root and leaves are used as powerful medicinal agents. Its properties are largely due to the alkaloid atropine which it contains. Called also deadly nightshade. A species of Amaryllis (A. Belladonna); the belladonna lily. Origin: It, literally fine lady; bella beautiful + donna lady. Source: Websters Dictionary (01 Mar 1998) |
| belladonna alkaloid | Atropine and related alkaloids which are anticholinergic. (27 Sep 1997) |
| belladonna alkaloids | Alkaloids obtained from various plants, especially the deadly nightshade (atropa belladonna), variety acuminata; atropine, hyoscyamine and scopolamine are classical, specific antimuscarinic agents with many pharmacologic actions; used mainly as antispasmodics. (12 Dec 1998) |
| belladonna extract | A powdered extract from the leaves and/or roots of Atropa belladonna; used to formulate various pharmaceutical dosage forms. Contains the alkaloids of belladonna (atropine and scopolamine) and has been used in the treatment of ulcers, diarrhoea, and parkinsonism. (05 Mar 2000) |
| belladonna ophthalmologic | Medications instilled into the eye that result in dilation of the pupil. A common example is homatropine eye drops. (27 Sep 1997) |
| belladonna tincture | A green hydroalcoholic mobile liquid containing the alkaloids atropine and scopolamine and other substances extracted from the leaves of Atropa belladonna, the botanical source for these anticholinergic drugs. The tincture allows for gradual titration of dose by counting drops of the preparation ingested. Formerly widely used in ulcer therapy or the symptomatic treatment of diarrhoea, alone or in combination with antacids and insoluble clays. (05 Mar 2000) |
| belladonnine | An artificial alkaloid derived from atropine by warming with hydrochloric acid. (05 Mar 2000) |
| bellbird | <zoology> A South American bird of the genus Casmarhincos, and family Cotingidae, of several species; the campanero. The Myzantha melanophrys of Australia. Origin: So called from their notes. Source: Websters Dictionary (01 Mar 1998) |
| belle indifference | See: la belle indifference. (05 Mar 2000) |