| pars cruciformis vaginae fibrosae | The fibres of the fibrous sheath of the fingers and toes which form X-shaped patterns over the region of the interphalangeal joints. Synonym: pars cruciformis vaginae fibrosae, crucial ligament, cruciform part of fibrous sheath, cruciform pulley, ligamenta cruciata digitorum. (05 Mar 2000) |
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| pars cupularis recessus epitympanici | The dome-shaped, highest portion of the epitympanic recess. Synonym: pars cupularis recessus epitympanici. (05 Mar 2000) |
| pars cystica | The smaller caudal division of the primitive embryonic hepatic bud, developing into the gallbladder and cystic duct. (05 Mar 2000) |
| pars descendens aortae | A part of the aorta, further divided into the thoracic aorta and the abdominal aorta. Synonym: pars descendens aortae, aorta descendens, descending part of aorta. (05 Mar 2000) |
| pars descendens duodeni | pars descendens duodeni |
| pars dextra faciei diaphragmaticae hepatis | The part of the diaphragmatic surface of the liver deep to the bodies of the lower ribs on the right side. Synonym: pars dextra faciei diaphragmaticae hepatis. (05 Mar 2000) |
| pars distalis | The larger part of the adenohypophysis composed of cords of epithelial cells individually specialised to secrete various tropic hormones that exert their effect on several target organs in the body. The secretory activity of these cells is under the control of either releasing or inhibiting factors elaborated by hypothalamic neurons and transported to the adenohypophysis by the hypothalamo-hypophysial portal system. Synonym: pars distalis. (05 Mar 2000) |
| pars dorsalis pontis | The part of the pons bounded laterally by the middle cerebellar peduncles and anteriorly by the ventral part of pons; it is continuous with the tegmentum of the mesencephalon and contains long tracts such as the medial and lateral lemnisci, cranial nerve nuclei, and reticular formation. Synonym: pars dorsalis pontis, tegmentum of pons. (05 Mar 2000) |
| pars endocrina pancreatis | See: pancreas. (05 Mar 2000) |
| pars exocrina pancreatis | pars exocrina pancreatis |
| pars flaccida membranae tympani | Triangular loose part of tympanic membrane between the malleolar folds. Synonym: pars flaccida membranae tympani, flaccid membrane, membrana flaccida, Rivinus' membrane, Shrapnell's membrane. (05 Mar 2000) |
| pars foetalis placentae | <embryology> Placenta foetalis, the chorionic portion of the placenta, containing the foetal blood vessels, from which the funis develops; specifically, in humans, it develops from the chorion frondosum. Synonym: pars foetalis placentae. (05 Mar 2000) |
| pars frontalis corporis callosi | Frontal radiation of the corpus callosum; that part of the fibre radiation of the corpus callosum which bends forward toward the frontal pole of the cerebrum. Synonym: forceps minor, forceps anterior, frontal part of corpus callosum, pars frontalis corporis callosi. (05 Mar 2000) |
| pars glossopharyngea musculi constrictoris pharyngis superioris | See: superior constrictor muscle of pharynx. Synonym: pars glossopharyngea musculi constrictoris pharyngis superioris. (05 Mar 2000) |
| pars granulosa | The granular and filamentous part of the nucleolonema of the nucleolus. (05 Mar 2000) |