Question

Assertion: veins are thin walled vessels and have valves in them.
Reason: veins distribute blood to various parts of the body.

*Correct answers needed
*Spammed answers will be reported on the spot

Answer 1

Answer:

Vein have thin wall and valve ,because in vein blood flow smoothly & do not create any external pressure so it thin wall. It have valve because valve prevent back flow of blood .

Answer 2

Answer:

Arteries carry blood from the heart to various organs of the body under high pressure so they have thick and elastic walls. Veins collect the blood from different organs and bring it back to the heart. The blood is no longer under pressure so, the walls are thin with valves to ensure that blood flows only in one direction.

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