The smallest blood vessel of the circulatory system is:

blood capillaries

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Vena cava

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Capillaries

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Aorta

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Solution

The correct option is C Capillaries
Blood capillaries are the smallest blood vessels. Each capillary is up to a few cells thick to allow diffusion of blood through it to the organs/tissues.

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The smallest blood vessel of the circulatory system is ___.

Name the smallest blood vessel of the circulatory system.

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