artery

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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.

artery

[′ärd·ə·rē]
(anatomy)
A vascular tube that carries blood away from the heart.

artery

any of the tubular thick-walled muscular vessels that convey oxygenated blood from the heart to various parts of the body
References in periodicals archive ?
for the Cervical Artery Dissection and Ischemic Stroke Patients (CADISP) Study Group.
Migraine, migraine aura, and cervical artery dissection: a systematic review and meta-analysis.
3) Noninvasive imaging has since greatly improved the diagnosis of cervical artery dissection and of stroke, (4) and cervical artery dissection is now recognized as pathogenic of strokes occurring in association with chiropractic manipulation.
A total of 16 cervical artery dissections, 14 VAD and 2 CAD, were confirmed by computed tomography angiography (CTA), magnetic resonance angiography (MRA), or catheter angiography (figure 1).
Cervical artery dissection: trauma and other potential mechanical trigger events.
Mechanism of ischemic infarct in spontaneous cervical artery dissection.
The pathophysiologic link between migraine and cervical artery dissection remains unclear, Dr.
A series of searches was performed using the terms cervical artery dissection, vertebral artery dissection, and internal carotid artery dissection in combination with causation and risk factors using the AND Boolean operator.
The volume begins with an elaboration of an animal model of carotid dissection, which is followed by discussions of epidemiology, current knowledge, and hypotheses about possible mechanisms of spontaneous and traumatic cervical artery dissection.
History of cervical artery dissection neck Active or existing VAD or CAD neck Active cervical spine cord injury neck Symptomatic, significant, extracranial carotid neck stenosis Acute cardiac disease (e.
Among the many reported complications of an intractable hypopharyngeal foreign body are cervical abscess, medi-astinal abscess, rupture of the cervical artery, and arterial aneurysm.