HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Largest vessels
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Smallest vessels
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Either A or B
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None of the above
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Detailed explanation-1: -Capillaries are the smallest blood vessels in the body.
Detailed explanation-2: -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. The venule is very thin-walled and easily prone to rupture with excessive volume.
Detailed explanation-3: -The final branches of the circulatory system are the capillaries. Blood capillaries have a very thin lumen for the proper exchange of nutrients and gases. The lumen of the capillaries is very small because the blood flow here is too slow for the maximum exchange process. The capillaries also lack thick muscular walls.