Biology, asked by marinette63, 7 months ago

why there are valves in veins??​

Answers

Answered by vyaskrishna38
1

Answer:

1).Unlike arteries, veins contain valves that ensure blood flows in only one direction. 2).Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.

3).Valves also help blood travel back to the heart against the force of gravity.

Answered by mudhirajharika25
1

Answer:

to prevent back flow  of blood

Explanation:

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