Capillaries

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Harvard Medical School
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Chrome 2001
Chrome 2001
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Capillaries

Heart and Circulatory
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The Blood Vessels
Capillaries
Capillaries
htmJHEHeart.152184
These tiny vessels supply oxygen and nutrients to tissues.
152184
InteliHealth
2011-05-30
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InteliHealth Medical Content
2014-05-30

Reviewed by the Faculty of Harvard Medical School

Capillaries

These are the tiny vessels — only slightly wider than a single blood cell — that carry blood between the smallest arteries and the smallest veins. Capillaries form a fine network throughout the body's organs and tissues. It's through the thin capillary walls that blood and its constituent cells pass oxygen and nutrients to tissues and receive carbon dioxide and other waste products for excretion. Capillaries are not open to blood flow all the time; they open and close according to each individual organ's requirements for oxygen and nutrients.

 

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capillaries
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Last updated June 10, 2014


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