Physics, asked by shahnaztabbsum16, 2 months ago

viens are thin walled and have valves .Eplain

Answers

Answered by Anonymous

1

Answer:

Veins have thin walls because the blood there is no longer under pressure and they have valves to ensure blood flow in one direction

Answered by sonalipaul20172020

0

Answer:

Veins have thin walls because the blood there is no longer under pressure and they have valves to ensure blood flow in one direction. .

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