give reasons for the following. A-Blood is the river of life B-walls of capillaries are very thin.
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HOME / ... / BIOLOGY OF THE BLOOD VESSELS
Biology of the Blood Vessels
By Jessica I. Gupta, MD, Michigan Medicine at the University of Michigan;
Michael J. Shea, MD, Michigan Medicine at the University of Michigan
Last full review/revision Apr 2019| Content last modified Apr 2019
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The heart and blood vessels constitute the cardiovascular (circulatory) system. The blood circulating in this system delivers oxygen and nutrients to the tissues of the body and removes waste products from the tissues.
The blood vessels consist of
Arteries
Arterioles
Capillaries
Venules
Veins
All blood is carried in these vessels.
Blood Vessels: Circulating the Blood
Blood travels from the heart in arteries, which branch in