Biology, asked by mdsadiquehussain9210, 10 months ago

how is backflow of blood inside heart and veins prevented​

Answers

Answered by reena090186
1

Veins are provided with valves to prevent backflow of deoxygenated blood.

hope it helps..

Answered by chitraspm78
0

Answer:

red

Explanation:

because it is hard ha

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