| functional prepubertal castration syndrome | <syndrome> A syndrome characterised by the absence of testes from the scrotum but in their place mesonephric duct derivatives, pronounced gynaecomastia and eunuchoid habitus, and increased urinary excretion of gonadotrophins. (05 Mar 2000) |
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| functional psychosis | An obsolete term once used to denote schizophrenia and other severe mental disorders before modern science discovered a biological component to some aspects of each of the disorders. (05 Mar 2000) |
| functional refractory period | The minimum interval possible between successive responses to stimulation of a tissue. (05 Mar 2000) |
| functional residual air | The volume of air remaining in the lungs at the end of a normal, quiet expiration. It is the sum of the residual volume and the expiratory reserve volume. Common abbreviation is frc. (12 Dec 1998) |
| functional residual capacity | The volume of air remaining in the lungs at the end of a normal, quiet expiration. It is the sum of the residual volume and the expiratory reserve volume. Common abbreviation is frc. (12 Dec 1998) |
| functional spasm | Professional neurosis, a disorder of a group of muscles used chiefly in one's occupation, marked by the occurrence of spasm, paresis, or incoordination on attempt to repeat the habitual movements; e.g., writer's cramp; probably a focal dystonia. Synonym: craft palsy, functional spasm. (05 Mar 2000) |
| functional splint | The joining of two or more teeth into a rigid unit by means of fixed restorations that cover all or part of the abutment teeth. (05 Mar 2000) |
| functional stricture | A stricture due to localised spasm of muscular fibres in the wall of the canal. Synonym: functional stricture, temporary stricture. (05 Mar 2000) |
| functional terminal innervation ratio | The number of muscle fibres divided by the number of axons that innervate them. (05 Mar 2000) |
| functional visual loss | An apparent loss of visual acuity or visual field with no substantiating physical signs; often due to a natural concern about visual loss combined with suggestibility and a fear of the worst; best treated with reassurance. (05 Mar 2000) |
| functional vocal fatigue | Difficult or abnormal voice production, the enunciation being too high, too loud, or too hard. Synonym: functional vocal fatigue. Origin: phon-+ G. Astheneia, weakness (05 Mar 2000) |
| anal sphincter | See: external anal sphincter, internal anal sphincter. (05 Mar 2000) |
| anatomical sphincter | An accumulation of muscular circular fibres or specially arranged oblique fibres the function of which is to reduce partially or totally the lumen of a tube, the orifice of an organ, or the cavity of a viscus; the closing component of a pylorus. (05 Mar 2000) |
| annular sphincter | A short thickening of circular muscular fibres, similar to a ring; a ring-shaped sphincter as opposed to a segmental sphincter. (05 Mar 2000) |
| antral sphincter | Angular sphincter, thickening of the circular muscular layer forming a proposed intermediate sphincter at the level of the angular notch of the stomach. While the thickening of the circular muscle may indicate the commencement of the pyloric antrum, true functional sphincteric activity distinct from the other peristaltic contractions of the stomach is not observed although some of these may in fact temporarily close off the antrum from the remainder of the stomach lumen. Synonym: antral sphincter, midgastric transverse sphincter, sphincter antri, sphincter intermedius, sphincter of antrum, sphincter of gastric antrum. (05 Mar 2000) |