| fleabane | <botany> One of various plants, supposed to have efficacy in driving away fleas. They belong, for the most part, to the genera Conyza, Erigeron, and Pulicaria. Source: Websters Dictionary (01 Mar 1998) |
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| fleam | <surgery> A sharp instrument used for opening veins, lancing gums, etc.; a kind of lancet. Fleam tooth, a tooth of a saw shaped like an isosceles triangle; a peg tooth. Origin: F. Flamme, OF. Flieme, fr. LL. Flevotomum, phlebotomum; cf. D. Vlijm. See Phlebotomy. Source: Websters Dictionary (01 Mar 1998) |
| fleas | Parasitic, blood-sucking, wingless insects comprising the order siphonaptera. (12 Dec 1998) |
| fleawort | <botany> An herb used in medicine (Plantago Psyllium), named from the shape of its seeds. Source: Websters Dictionary (01 Mar 1998) |
| flecainide | <chemical> N-(2-piperidinylmethyl)-2,5-bis(2,2,2-trifluoroethoxy)benzamide. A potent anti-arrhythmia agent, effective in a wide range of ventricular and atrial arrhythmias and tachycardias. Paradoxically, however, in myocardial infarct patients with either symptomatic or asymptomatic arrhythmia, flecainide exacerbates the arrhythmia and is not recommended for use in these patients. Pharmacological action: anti-arrhythmia agents. Chemical name: Benzamide, N-(2-piperidinylmethyl)-2,5-bis(2,2,2-trifluoroethoxy)- (12 Dec 1998) |
| flecainide acetate | N-(2-Piperidylmethyl)-2,5-bis(2,2,2-trifluoroethoxy)benzamide monoacetate;a member of the membrane-stabilizing group of antiarrhythmics, with local anaesthetic activity, used in the treatment of refractory ventricular arrhythmias. (05 Mar 2000) |
| Flechsig's areas | Three divisions (anterior, lateral, posterior) of each lateral half of the medulla as seen on transverse section, marked off by the root fibres of the hypoglossal and vagus nerves. (05 Mar 2000) |
| Flechsig's fasciculi | Fasciculus anterior proprius and fasciculus lateralis proprius. See: fasciculi proprii. (05 Mar 2000) |
| Flechsig's ground bundles | Fasciculus anterior proprius and fasciculus lateralis proprius. See: fasciculi proprii. (05 Mar 2000) |
| Flechsig's tract | A compact bundle of heavily myelinated, thick fibres at the periphery of the dorsal half of the lateral funiculus of the spinal cord, originating in the ipsilateral thoracic nucleus (column of Clarke) and ascending by way of the inferior cerebellar peduncle. Terminals end as mossy fibres in the granular layer of the cortex of the cerebellar vermis. The bundle conveys largely proprioceptive information originating from the annulospiral nerve endings surrounding muscle spindles and from Golgi tendon organs. Synonym: tractus spinocerebellaris posterior, Flechsig's tract. (05 Mar 2000) |
| Flechsig, Paul | <person> German neurologist, 1847-1929. See: Flechsig's areas, Flechsig's ground bundles, Flechsig's fasciculi, Flechsig's tract, oval area of Flechsig, semilunar nucleus of Flechsig. (05 Mar 2000) |
| fleck dystrophy of cornea | A bilateral occurrence of subtle spots in the corneal stroma; the spots vary in size and shape, and have sharp margins and clear centres; photophobia may occur; autosomal dominant inheritance. (05 Mar 2000) |
| fleck retina of Kandori | An autosomal-recessive disorder of the retinal pigment epithelium occurring among Japanese. (05 Mar 2000) |
| flecked retina | An retina exhibiting fundus flavimaculatus, hereditary drusen, or fundus albipunctatus. (05 Mar 2000) |
| flecked retina syndrome | <syndrome> Hereditary retinal disorder with abnormal transmission of fluorescence through the retinal pigment epithelium on angiography. (05 Mar 2000) |