| RAP | recurrent abdominal pain; regression-associated protein; renal artery pressure; resident assessment ... |
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| RGEA | right gastroepiploic artery |
| RHA | Regional Health Authority; right hepatic artery |
| RIC | right internal carotid [artery]; Royal Institute of Chemistry |
| RIMA | right internal mammary artery |
| anterior superior segmental artery of kidney | Origin, anterior branch of renal. See: segmental arteries of kidney. Synonym: arteria segmenti anterioris superioris renis, artery of anterior {superior segment of kidney}. (05 Mar 2000) |
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| anterior temporal artery | <anatomy, artery> A branch of the insular part of the middle cerebral artery distributed to the cortex of the anterior part of the temporal lobe. Synonym: arteria temporalis anterior. (05 Mar 2000) |
| anterior tibial artery | <anatomy, artery> Origin, popliteal; branches, posterior and anterior tibial recurrent, lateral and medial anterior malleolar, dorsalis pedis, lateral tarsal, medial tarsal, arcuate, dorsal metatarsal, and dorsal digital. Synonym: arteria tibialis anterior. (05 Mar 2000) |
| anterior tibial recurrent artery | <anatomy, artery> A branch of the anterior tibial artery which ascends to supply the front and sides of the knee joint, thus contributing to the articular network of the knee. Synonym: arteria recurrens tibialis anterior. (05 Mar 2000) |
| anterior tympanic artery | <anatomy, artery> Origin, maxillary; distribution, middle ear; anastomoses, tympanic branches of internal carotid and ascending pharyngeal and stylomastoid. Synonym: arteria tympanica anterior, glaserian artery. (05 Mar 2000) |
| apicoposterior artery | <anatomy, artery> A pulmonary artery branch to the apicoposterior segment of the upper lobe. (05 Mar 2000) |
| appendicular artery | <anatomy, artery> The branch of the ileocolic artery that descends posterior to the terminal ileum in the mesoappendix to supply the vermiform appendix. Synonym: arteria appendicularis. (05 Mar 2000) |
| arcuate artery | <anatomy, artery> Origin, dorsalis pedis; branches, passes laterally dorsal to the bases of the metatarsals, giving rise to the 2nd, 3rd, and 4th dorsal metatarsal arteries at the level of the medial cuneiform bone. Synonym: arteria arcuata. (05 Mar 2000) |
| artery | <anatomy, artery> Blood vessel carrying blood away from the heart, walls have smooth muscle and are innervated by the sympathetic nervous system. (18 Nov 1997) |
| artery, brachial | The artery that runs from the shoulder down to the elbow. (12 Dec 1998) |
| artery, carotid | A key artery located in the front of the neck that carries blood from the heart to the brain. (12 Dec 1998) |
| artery needle | A blunt-pointed, curved needle, set in a handle, with the eye at the point, used for passing a ligature around an artery. (05 Mar 2000) |
| artery of adamkiewicz | <radiology> Arteria radicularis magna, arises from aorta, from intercostal or lumbar aa., between T8 and L4, left side (80%), supplies lower 2/3 of spinal cord, typical hairpin course (12 Dec 1998) |
| artery of angular gyrus | The last branch of the terminal part of the middle cerebral artery distributed to parts of the temporal parietal and occipital lobes. Synonym: arteria gyri angularis, angular artery. (05 Mar 2000) |
| artery of anterior inferior segment of kidney | Origin, anterior branch of renal. See: segmental arteries of kidney. Synonym: arteria segmenti anterioris inferioris renis, artery of anterior {inferior segment of kidney}. (05 Mar 2000) |