HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which vessels allows nutrients and waste to be exchanged between the cells and the blood:
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arteries
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veins
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venules
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capillaries
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Explanation:
Detailed explanation-1: -Venules are the smallest veins and receive blood from capillaries. They also play a role in the exchange of oxygen and nutrients for water products. There are post-capillary sphincters located between the capillaries and venules.
Detailed explanation-2: -Capillaries connect arterioles to venules. They allow the exchange of nutrients and wastes between the blood and the tissue cells, together with the interstitital fluid. This exchange occurs by passive diffusion and by pinocytosis which means ‘cell drinking’. Pinocytosis is used for proteins, and some lipids.
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