| pilo- | Hair. Origin: L. Pilus (05 Mar 2000) |
|---|---|
| pilobezoar | Synonym: trichobezoar. Origin: pilo-+ bezoar (05 Mar 2000) |
| pilocarpine | <chemistry> An alkaloid extracted from jaborandi (Pilocarpus pennatifolius) as a white amorphous or crystalline substance which has a peculiar effect on the vasomotor system. Origin: From NL. Pilocarpus pennatifolius jaborandi; L. Pilus hair + Gr. Fruit: cf. F. Pilocarpine. Source: Websters Dictionary (01 Mar 1998) |
| pilocarpine esterase | <enzyme> Hydrolyzes pilocarpine to pilocarpic acid, probably not the same as acetylcholinesterase or butyrylcholinesterase Registry number: EC 3.1.1.- (26 Jun 1999) |
| pilocarpus | A genus of trees and shrubs found in Central and South America and in the West Indies. Constitutes the botanical source for pilocarpine, an alkaloid which activates cholinergic muscarinic receptors. Pilocarpine is used in the treatment of glaucoma where it is instilled in the eye. Sudorific; miotic. Synonym: Jaborandi. (05 Mar 2000) |
| pilocystic | Denoting a dermoid cyst containing hair. Origin: pilo-+ G. Kystis, bladder (05 Mar 2000) |
| piloerection | <dermatology> Erection of the hair. (18 Nov 1997) |
| piloid | Hairlike; resembling hair. Origin: pilo-+ G. Eidos, resemblance (05 Mar 2000) |
| piloid astrocytoma | <tumour> A slowly growing astrocytoma composed histologically of elongated fibrous astrocytes; often located in the optic chiasm or hypothalamus. Synonym: piloid astrocytoma. (05 Mar 2000) |
| piloid gliosis | An area of chronic, reactive astrocytosis composed of thin, hairlike cells in vaguely parallel array. (05 Mar 2000) |
| pilojection | Process of shooting shafts of stiff mammalian hair into a saccular aneurysm in the brain in order to produce thrombosis. Origin: pilo-+ injection (05 Mar 2000) |
| pilomatrixoma | A tumour composed of cells resembling those of the hair matrix, which undergo 'mummification' and may calcify. It is a relatively uncommon tumour, which may occur at any age from infancy. The majority of patients are under 20, and females are affected more than males. The lesion is usually a solitary deep dermal or subcutaneous tumour 3-30 mm in diameter, situated in the head, neck, or upper extremity. (12 Dec 1998) |
| pilomotor | Moving the hair; denoting the arrectores pilorum muscles of the skin and the postganglionic sympathetic nerve fibres innervating these small smooth muscles. Origin: pilo-+ L. Motor, mover (05 Mar 2000) |
| pilomotor fibres | Nerve fibre's that innervate the erector muscles of hair follicles responsible for piloerection. (05 Mar 2000) |
| pilomotor reflex | Contraction of the smooth muscle of the skin resulting in "gooseflesh" caused by mild application of a tactile stimulus or by local cooling. (05 Mar 2000) |