The smallest blood vessels which are one-cell thick are called

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The smallest blood vessels which are one-cell thick, are called ________

A. Vena cava

B. Arteries

C. Veins

D. Capillaries

Answer: Option D

Solution(By Examveda Team)

A capillary is a small blood vessel from 5 to 10 micrometres (μm) in diameter, and having a wall one endothelial cell thick. They are the smallest blood vessels in the body: they convey blood between the arterioles and venules.

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