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Related to anterior cerebral artery: posterior cerebral artery, middle cerebral artery, basilar artery


blood vessel that conveys blood away from the heartheart,
muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a ceaseless activity, lasting from before birth to the end of life. Anatomy and Function

The human heart is a pear-shaped structure about the size of a fist.
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. Except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs, arteries carry oxygenated blood from the heart to the tissues. The largest arterial trunk is the aortaaorta
, primary artery of the circulatory system in mammals, delivering oxygenated blood to all other arteries except those of the lungs. The human aorta, c.1 in. (2.54 cm) in diameter, originates at the left ventricle of the heart.
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, branches of which divide and subdivide into ever-smaller tubes, or arterioles, until they terminate as minute capillariescapillary
, microscopic blood vessel, smallest unit of the circulatory system. Capillaries form a network of tiny tubes throughout the body, connecting arterioles (smallest arteries) and venules (smallest veins).
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, the latter connecting with the veinsvein,
blood vessel that returns blood to the heart. Except for the pulmonary vein, which carries oxygenated blood from the lungs to the heart, veins carry deoxygenated blood. The oxygen-depleted blood passes from the capillaries to the venules (small veins).
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 (see circulatory systemcirculatory system,
group of organs that transport blood and the substances it carries to and from all parts of the body. The circulatory system can be considered as composed of two parts: the systemic circulation, which serves the body as a whole except for the lungs, and the
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). Other important arteries are the subclavian and brachial arteries of the shoulder and arm, the carotid arteries that lead to the head, the coronary arteries that nourish the heart itself, and the iliac and femoral arteries of the abdomen and lower extremities. The walls of the large arteries have three layers: a tough elastic outer coat, a layer of muscular tissue, and a smooth, thin inner coat. Arterial walls expand and contract with each heartbeat, pumping blood throughout the body. The pulsating movement of blood, or pulsepulse,
alternate expansion and contraction of artery walls as heart action varies blood volume within the arteries. Artery walls are elastic. Hence they become distended by increased blood volume during systole, or contraction of the heart.
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, may be felt where the large arteries lie near the body surface.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.


A vascular tube that carries blood away from the heart.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


any of the tubular thick-walled muscular vessels that convey oxygenated blood from the heart to various parts of the body
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Anterior cerebral artery territory infarction in the Lausanne Stroke Registry Clinical and etiologic patterns.
Lawton, "Nonsaccular aneurysms of the azygos anterior cerebral artery," Neurosurgical Focus, vol.
Hironaka, "Giant aneurysm of the azygos anterior cerebral artery," Neurologia Medico-Chirurgica, vol.
Studies [18,19] which investigated hemodynamic ability of the Willis circle found that anterior cerebral artery with recorded diameter of 0.4 mm has the ability to establish collateral circulation.
Figure 1: Frequency of infarcts according to anatomical distribution Key: ACA (Anterior Cerebral Artery), MCA (Middle Cerebral Artery), PCA (Posterior Cerebral Artery) ACA 24 MCA 84 PCA 28 Brainstem 28 Multiple vessel territory 20 Small vessel 18 Cerebellum 14 Note: Table made from pie chart.
Blood flow in the anterior cerebral artery from both sides was not subject to location detection.
There was evidence of vasospasm of the anterior cerebral artery complex, and he deteriorated clinically with evidence of symptomatic delayed ischemic neurological deficit (DIND) 3 days after surgery (8 days after SAH).
Table 1 Anterior Circulation Major Artery Area of Brain Supplied Middle Cerebral Artery (MCA) Entire lateral surfaces of the hemisphere except for the occipital pole and the inferio- lateral surface of the hemisphere, Anterior Cerebral Artery (ACA) Medial surfaces of frontal and parietal lobes and part of cingulate gyrus.
Magnetic resonance angiography included involvement of middle, anterior or posterior cerebral arteries their unilateral and bilateral involvement, involvement of middle cerebral artery with anterior cerebral artery, posterior cerebral artery or internal carotid artery.
Major intracranial arteries include Middle Cerebral Artery (MCA), Anterior Cerebral Artery (ACA), Posterior Cerebral Artery (PCA), vertebral and basilar arteries.
Moyamoya disease (MMD) is an uncommon chronic cerebrovascular disease characterized by the formation of collaterals near circle of Willis secondary to occlusion or stenosis of proximal, middle, or anterior cerebral artery. Moyamoya in Japanese means "puff of smoke" [2].
(5) In this case, as in other reports of intracavernous anastomosis, (23,6-8) the intracavernous vessel continues as the middle cerebral artery (MCA), while the A1 segment of the anterior cerebral artery (ACA) ipsilateral to the absent ICA is aplastic or hypoplastic; this is slightly different than Lie's original description in which the intracavernous anastomosis supplies both the MCA and ACA territories.

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