| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
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| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record;... |
| MAVD | mixed aortic valve disease |
| MBT | mercaptobenzothiazole; mixed bacterial toxin; myeloblastin |
| MCAR | mixed cell agglutination reaction |
| perforating branches of palmar metacarpal arteries | The perforating branches of the palmar metacarpal arteries, three small arteries that pass dorsally through the second, third, and fourth interosseous spaces of the hand from the palmar metacarpal arteries. Synonym: ramus perforantes arteriarum metacarpalium palmarium, perforating arteries of hand. (05 Mar 2000) |
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| perforating branches of plantar metatarsal arteries | The perforating branches of the plantar metatarsal arteries, three small arteries that pass dorsally through the second, third, and fourth interosseous spaces of the foot from the plantar metatarsal arteries. Synonym: ramus perforantes arteriarum metatarsearum plantarium, perforating arteries of foot. (05 Mar 2000) |
| Charcot's arteries | Any one of a variety of small artery's entering the base of the brain through the anterior perforated substance and supplying the striatum, globus pallidus, and internal capsule; most of these perforating arteries are branches of the M1 segment (clinical terminology) of the middle cerebral and and (rarely) of the anterior choroidal artery. Synonym: Charcot's arteries, lateral striate arteries. (05 Mar 2000) |
| mesenteric arteries | Arteries which arise from the abdominal aorta and distribute to most of the intestines. (12 Dec 1998) |
| ciliary arteries | Arteries supplying the iris, conjunctiva, choroid, and ciliary body. The anterior ciliary arteries originate in the ophthalmic and lacrimal arteries and supply the iris and conjunctiva; the short posterior ciliary arteries originate in the ophthalmic artery and supply the choroid; the long posterior ciliary arteries originate in the ophthalmic artery and supply the iris and ciliary process. (12 Dec 1998) |
| circumflex femoral arteries | See: lateral circumflex femoral artery, medial circumflex femoral artery. (05 Mar 2000) |
| circumflex humeral arteries | See: anterior circumflex humeral artery, posterior circumflex humeral artery. (05 Mar 2000) |
| circumflex iliac arteries | See: deep circumflex iliac artery, superficial circumflex iliac artery. (05 Mar 2000) |
| colic arteries | <anatomy> Arteries supplying the colon. See: left colic artery, middle colic artery, right colic artery. (05 Mar 2000) |
| collateral branches of posterior intercostal arteries 3-11 | Branch arising near angle of rib and descending to run along superior border of rib below; distribution: lower half of intercostal spaces 3-11; anastomoses: collateral branches of anterior intercostal arteries. Synonym: ramus collateralis arteriarum intercostalium posteriorum III-XI. (05 Mar 2000) |
| pipestem arteries | Artery's hardened by calcification as seen in Monckeberg's arteriosclerosis; descriptive of the characteristic feeling to the finger of an examiner. (05 Mar 2000) |
| conjunctival arteries | anterior conjunctival artery, posterior conjunctival artery |
| coronary arteries | The arteries that supply the heart with oxygenated blood. There are a number of vessels that are important with regard to coronary artery disease, but the right coronary artery, posterior descending, left main coronary artery, left anterior descending and left circumflex are probably the most frequently surgically grafted coronary vessels. (27 Sep 1997) |
| cortical arteries | Branches of the anterior, middle, and posterior cerebral artery's that supply the cerebral cortex. (05 Mar 2000) |
| myometrial arcuate arteries | Branches of the uterine and ovarian artery's. (05 Mar 2000) |