| pars parasympathica | parasympathetic part |
|---|---|
| pars pelvina | pelvic part |
| pars pelvina ureteris | The part of the ureter between the brim of the pelvis and the urinary bladder; the upper pelvic portion of the embryologic urogenital sinus. Synonym: pars pelvina ureteris. (05 Mar 2000) |
| pars peripherica | One of the two major divisions of the nervous system. Nerves in the PNS connect the central nervous system (CNS) with sensory organs, other organs, muscles, bloodvessels and glands. (22 May 1997) |
| pars perpendicularis | Flat portion of a bone which lies within or closely approximates a vertical plane. See: perpendicular plate of ethmoid bone, perpendicular plate of palatine bone. Synonym: lamina perpendicularis, pars perpendicularis, vertical plate. (05 Mar 2000) |
| pars petrosa arteriae carotidis internae | <anatomy, artery> The part of the internal carotid artery in the carotid canal; its branches are carotidotympanic arteries and the artery of the pterygoid canal. Synonym: pars petrosa arteriae carotidis internae, petrous bone. (05 Mar 2000) |
| pars petrosa ossis temporalis | The part of the temporal bone that contains the structures of the inner ear and the second part of the internal carotid artery; in antenatal life it appears as a separate ossification centre. Synonym: pars petrosa ossis temporalis, periotic bone, petrosal bone, petrous pyramid. (05 Mar 2000) |
| pars phallica | The lower portion of the urogenital sinus, related to the base of the genital tubercle. (05 Mar 2000) |
| pars pharyngea hypophyseos | Residual tissue derived from the hypophysial diverticulum that lies in the lamina propria of the nasopharynx; its cells and their arrangement are identical with those of the pars distalis. Synonym: pars pharyngea hypophyseos. (05 Mar 2000) |
| pars pigmentosa | pars pigmentosa |
| pars plana | The darkly pigmented posterior zone of the ciliary body continuous with the retina at the ora serrata. Synonym: ciliary disk, ciliary ring, pars plana. Origin: Mod. L. (05 Mar 2000) |
| pars planitis | <ophthalmology> A condition that causes inflammation of the peripheral retina and/or pars plana, with exudation into the overlying vitreous base, and oedema of the optic disk and adjacent retina. It is a form of granulomatous uveitis and is a common condition with no detectable focal pathology. It causes fibrovascular proliferation at the inferior ora serrata. (22 Sep 2002) |
| pars postcommunicalis arteria cerebri anterior | <anatomy, artery> The continuation of the anterior cerebral artery after the anterior communicating artery; it supplies branches to the cerebral cortex as it passes along the corpus callosum. Synonym: pars postcommunicalis arteria cerebri anterior, arteria pericallosa, postcommunical part of anterior cerebral artery. (05 Mar 2000) |
| pars posterior commissurae anterioris | <anatomy> The posterior portion of the anterior commissure of the brain. (05 Mar 2000) |
| pars posterior faciei diaphragmatis hepatis | That portion of the diaphragmatic surface of the liver that includes the bare area and the caudate lobe. Synonym: pars posterior faciei diaphragmatis hepatis. (05 Mar 2000) |