| OP | occipitoparietal; occipitoposterior; occiput posterior; octapeptide; olfactory peduncle; opening pre... |
|---|---|
| OPLL | ossification of posterior longitudinal ligament |
| PAL | pathology laboratory; peptidyl-alpha-hydroxyglycine alpha-amidating lysine phase alteration plane; p... |
| PAR | participating provider; passive avoidance reaction; perennial allergic rhinitis; photosynthetically ... |
| PAS | para aminosalicylate; Parent Attitude Scale; patient administration system; patient appointments and... |
| iliac veins | See: common iliac vein, external iliac vein, internal iliac vein, deep circumflex iliac vein, superficial circumflex iliac vein. (05 Mar 2000) |
|---|---|
| inferior cerebral veins | Numerous cerebral veins that drain the undersurface of the cerebral hemispheres and empty into the cavernous and transverse sinuses. Synonym: venae cerebri inferiores. (05 Mar 2000) |
| inferior gluteal veins | The venae comitantes of the inferior gluteal artery uniting at the sciatic foramen to form a common trunk which empties into the internal iliac vein. Synonym: venae gluteae inferiores. (05 Mar 2000) |
| inferior haemorrhoidal veins | An obsolete term for inferior rectal veins. (05 Mar 2000) |
| inferior palpebral veins | Veins of inferior eyelid; veins originatin gin the inferior eyelid and emptying into the angular vein. Synonym: venae palpebrales inferiores, veins of inferior eyelid. (05 Mar 2000) |
| inferior rectal veins | Veins that pass to the internal pudendal vein from the inferior rectal venous plexus around the anal canal. Synonym: venae rectales inferiores. (05 Mar 2000) |
| inferior thalamostriate veins | Veins draining the thalamus and striate body exiting the anterior perforated substance; tributary to the basal vein. Synonym: venae thalamostriatae inferiores, striate veins, venae striatae. (05 Mar 2000) |
| inferior veins of cerebellar hemisphere | Several veins draining the inferior portion of the cerebellar hemispheres; they terminate in the petrosal vein. Synonym: venae hemispherii cerebelli inferiores. (05 Mar 2000) |
| infrasegmental veins | infrasegmental veins |
| innominate cardiac veins | The small superficial vein's of the heart. Synonym: Vieussens' veins. (05 Mar 2000) |
| innominate veins | An obsolete term for brachiocephalic veins. (05 Mar 2000) |
| insular veins | Veins draining the cortex of the insula, tributaries to the deep middle cerebral vein. Synonym: insular veins. (05 Mar 2000) |
| intercapitular veins | The veins connecting the dorsal and palmar veins in the hand, or the dorsal and plantar veins in the foot. Synonym: venae intercapitales. (05 Mar 2000) |
| intercostal veins | See: anterior intercostal veins, posterior intercostal veins, highest intercostal vein, left superior intercostal vein. (05 Mar 2000) |
| interlobar veins of kidney | The veins in the kidney that parallel the interlobar arteries, receiving blood from arcuate veins, and terminate in the renal vein. Synonym: venae interlobares renis. (05 Mar 2000) |