| PAF | paroxysmal atrial fibrillation; peroxisomal assembly factor; phosphodiesterase-activating factor; pl... |
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| PAR | participating provider; passive avoidance reaction; perennial allergic rhinitis; photosynthetically ... |
| RAP | recurrent abdominal pain; regression-associated protein; renal artery pressure; resident assessment ... |
| SLAT | simultaneous laryngoscopy and abdominal thrusts |
| TAC | tachykinin; terminal antrum contraction; tetracaine, adrenalin, and cocaine; time-activity curve; to... |
| transverse colon | <anatomy> The third division of the colon (large intestine). It communicates with the ascending colon in the upper right-hand quadrant of the abdomen and the descending colon in the upper left-hand quadrant. (19 Jan 1998) |
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| transverse costal facet | A facet on the transverse process of a vertebra for articulation with the tubercle of a rib. Synonym: fovea costalis processus transversi, costal pit of transverse process. (05 Mar 2000) |
| transverse crest | A horizontal ridge that divides the fundus of the internal acoustic meatus into a superior and an inferior area. In the former are the introitus of the facial canal and openings for the branches of the vestibular nerve to the utricle and to the ampullae of the anterior and lateral saemicircular canals. In the latter are openings for the cochlear nerve, and for branches of the vestibular nerve to the saccule and to the ampulla of the posterior saemicircular canal. Synonym: crista transversa, falciform crest, transverse crest. (05 Mar 2000) |
| transverse crest of internal acoustic meatus | A horizontal ridge that divides the fundus of the internal acoustic meatus into a superior and an inferior area. In the former are the introitus of the facial canal and openings for the branches of the vestibular nerve to the utricle and to the ampullae of the anterior and lateral saemicircular canals. In the latter are openings for the cochlear nerve, and for branches of the vestibular nerve to the saccule and to the ampulla of the posterior saemicircular canal. Synonym: crista transversa, falciform crest, transverse crest. (05 Mar 2000) |
| transverse crural ligament | The ligament that binds down the extensor tendons proximal to the ankle joint; it is continuous with (a thickening of) the deep fascia of the leg. Synonym: retinaculum musculorum extensorum superius, ligamentum transversum cruris, superior retinaculum of extensor muscles, transverse crural ligament, transverse ligament of leg. (05 Mar 2000) |
| transverse diameter | The transverse diameter of the pelvic inlet, measured between the terminal lines. Synonym: diameter transversa. (05 Mar 2000) |
| transverse disk | One of the dark transverse bands seen on examining a striated muscular fibre under the microscope. (05 Mar 2000) |
| transverse ductules of epoophoron | A series of 10 to 15 short tubules that open into the longitudinal duct of the epoophoron and represent vestiges of the mesonephric duct. Synonym: ductuli transversi epoophori, tubuli epoophori. (05 Mar 2000) |
| transverse facial artery | <anatomy, artery> Origin, superficial temporal; distribution, parotid gland, parotid duct, masseter muscle, and overlying skin; anastomoses, infraorbital and buccal branches of maxillary, and buccal and masseteric branches of facial. Synonym: arteria transversa faciei. (05 Mar 2000) |
| transverse facial fracture | A complex fracture in which the facial bones are separated from the cranial bones. Synonym: Le Fort III craniofacial dysjunction, Le Fort III fracture, transverse facial fracture. (05 Mar 2000) |
| transverse facial vein | <anatomy, vein> A tributary of the superficial temporal or retromandibular veins, anastomosing with the facial vein. Synonym: vena transversa faciei, transverse vein of face. (05 Mar 2000) |
| transverse fasciculi | The transversely directed fibres in the distal portions of the palmar and plantar aponeuroses. Synonym: transverse fasciculi. (05 Mar 2000) |
| transverse fissure of cerebellum | The cleft caused by the protrusion of the anterior lobe of the cerebellum over the superior and middle cerebellar peduncles. Synonym: fissura transversa cerebelli. (05 Mar 2000) |
| transverse fissure of cerebrum | The triangular space between the corpus callosum and fornix above and the dorsal surface of the thalamus below, which is bounded laterally by the choroid fissure of the lateral ventricle, lined by pia mater, and opens caudally into the cistern of the great cerebral vein of the subarachnoid space. Synonym: fissura transversa cerebri. (05 Mar 2000) |
| transverse fissure of the lung | The deep fissure that separates the upper and middle lobes of the right lung. Synonym: fissura horizontalis pulmonis dextri, horizontal fissure of right lung, minor fissure. (05 Mar 2000) |