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Definitions (89)
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vasodilator
A chemical (natural or synthetic) that dilates blood vessels
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alveoli
The smallest lung units that include thin-walled air sacs directly linked with a network of small blood vessels (capillaries) where gas exchange occurs
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angina
Chest pain that is caused by parts of the heart not getting enough blood; usually the result of atherosclerosis of the coronary arteries.
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anticoagulants
Medications that thin the blood make the formation of blood clots less likely.
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anticoagulation
The act of receiving therapy with anticoagulants
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aorta
The largest artery in the body; carries all the oxygenated blood pumped out by the left ventricle to the rest of the body via a branching network of smaller arteries
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aortic valve
A valve in the heart that separates the left ventricle from the aorta preventing blood from flowing backwards into the ventricle.
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arginine
An essential amino acid whose natural breakdown and metabolism generates the potent vasodilator nitric oxide
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asthma
A disease in which the muscles surrounding the airways of the lungs spasm and result in reversible narrowing of the airways, making it difficult to exhale.
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atrium
The two smaller chambers (one on each side) of the heart; the right atrium accepts blood from the veins throughout the body and the left atrium accepts freshly oxygenated blood from the lungs
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