The blood vessels which constitute the circulatory system are:
(a) Arteries only
(b) Veins only
(c) Capillaries only
(d) All of these
number of chambers present in human heart are :
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Explanation:
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.
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(d)
There r 4 Chambers in human heart
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