| piribedil | <chemical> A dopamine d2 agonist. It is used in the treatment of parkinson disease, particularly for alleviation of tremor. It has also been used for circulatory disorders and in other applications as a d2 agonist. Pharmacological action: antiparkinson agents, dopamine agonists. Chemical name: Pyrimidine, 2-(4-(1,3-benzodioxol-5-ylmethyl)-1-piperazinyl)- (12 Dec 1998) |
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| pirie | <botany> A pear tree. Alternative forms: pery, pyrie. See: Pear. Source: Websters Dictionary (01 Mar 1998) |
| Pirie's bone | An anomalous bone of the foot located near the head of the talus. Synonym: Pirie's bone. (05 Mar 2000) |
| Pirie, George | <person> Scottish radiologist, 1864-1929. See: Pirie's bone. (05 Mar 2000) |
| piriform | Pear-shaped. Synonym: pyriform. Origin: L. Pirum, pear, + forma, form (05 Mar 2000) |
| piriform area | The olfactory cortex, corresponding to the rostral half of the uncus; receiving its major afferents from the olfactory bulb, it is classified as allocortex. See: cerebral cortex. Synonym: olfactory cortex, piriform area. (05 Mar 2000) |
| piriform cortex | The olfactory cortex, corresponding to the rostral half of the uncus; receiving its major afferents from the olfactory bulb, it is classified as allocortex. See: cerebral cortex. Synonym: olfactory cortex, piriform area. (05 Mar 2000) |
| piriform fossa | A recess in the anterolateral wall of the nasopharynx on each side of the vestible of the larynx separated from it by the aryepiglottic folds. Synonym: recessus piriformis, piriform recess, piriform sinus. (05 Mar 2000) |
| piriform muscle | <anatomy, muscle> Origin, margins of pelvic sacral foramina and greater sciatic notch of ilium; insertion, upper border of greater trochanter; action, rotates thigh laterally; nerve supply, nerve to piriformis (sciatic plexus). Synonym: musculus piriformis, musculus pyriformis, piriform muscle. (05 Mar 2000) |
| piriform neuron layer | The layer of Purkinje cells between the molecular and granular layers of the cerebellar cortex. Synonym: stratum neuronorum piriformium, ganglionic layer of cerebellar cortex, layer of piriform neurons, Purkinje's layer, stratum gangliosum cerebelli. (05 Mar 2000) |
| piriform opening | The anterior nasal opening in the skull. Synonym: apertura piriformis, piriform opening. (05 Mar 2000) |
| piriform recess | A recess in the anterolateral wall of the nasopharynx on each side of the vestible of the larynx separated from it by the aryepiglottic folds. Synonym: recessus piriformis, piriform recess, piriform sinus. (05 Mar 2000) |
| piriform sinus | A recess in the anterolateral wall of the nasopharynx on each side of the vestible of the larynx separated from it by the aryepiglottic folds. Synonym: recessus piriformis, piriform recess, piriform sinus. (05 Mar 2000) |
| piriformis | <anatomy, muscle> Origin, margins of pelvic sacral foramina and greater sciatic notch of ilium; insertion, upper border of greater trochanter; action, rotates thigh laterally; nerve supply, nerve to piriformis (sciatic plexus). Synonym: musculus piriformis, musculus pyriformis, piriform muscle. (05 Mar 2000) |
| pirinitramide | <chemical> 1'-(3-cyano-3,3-diphenylpropyl)-(1,4'-bipiperidine)-4'-carboxamide. A diphenylpropylamine with intense narcotic analgesic activity of long duration. It is a derivative of meperidine with similar activity and usage. Pharmacological action: analgesics, opioid, narcotics. Chemical name: (1,4'-Bipiperidine)-4'-carboxamide, 1'-(3-cyano-3,3-diphenylpropyl)- (12 Dec 1998) |