why do veins have valves whereas arteries dont have
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Answered by
8
bcz they have to pass blood through out the body ... and even against the force of gravity
rishikumar1107:
wah gravity
gravity ka blood se kya relation
maybe
Answered by
11
Arteries don't have valves because the blood i arteries flows under great pressure, so if there are valves , then the blood flow is obstructed, and may lead to damaging of the arteries. Veins have valves so as to prevent the back flow of blood.
vo gravity bol raha tha
blood flows againt flow of gravity in veins
so what he said is just justifing th question itself
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