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Which one of the following statements is...

Which one of the following statements is correct about the human circulatory system?

A

blood transports only oxygen not carbon dioxide.

B

human heart has 5 chambers.

C

Valves ensure that blood does not flow backwards.

D

Both oxygen rich and oxygen deficient blood gets mixed in the heart.

Text Solution

Verified by Experts

The correct Answer is:
c
Valves ensure that blood does not flow backwards.
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