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What is the definition of collateral blood vessels?

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Collateral blood vessels are small capillary-like branches of an artery that form over time in response to narrowed coronary arteries. The collaterals "bypass" the area of narrowing and help to restore blood flow. However, during times of increased exertion, the collaterals may not be able to supply enough oxygen-rich blood to the heart muscle.

SOURCES:

American Heart Association: "Heart Failure."

Heart Failure Society of America.

Texas Heart Institute.

National Heart Lung and Blood Institute.

Reviewed by Suzanne R. Steinbaum on October 29, 2017

SOURCES:

American Heart Association: "Heart Failure."

Heart Failure Society of America.

Texas Heart Institute.

National Heart Lung and Blood Institute.

Reviewed by Suzanne R. Steinbaum on October 29, 2017

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What is the definition of complex carbohydrates?

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