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Tomorrow is my Unit Test and I'm in class 10th so give the answers according to UT... PLEASE☺️❤️
✨Why Veins have valves ?
✨Why Arteries have thick wall ?
Answers
HOLA... Happy to help.
▪ veins have valves to prevent flow of blood in opposite (backward) direction.
▪ Arteries experiences high pressure exerted by blood as they carry blood pumped by the heart directly. Thus they have thick wall to aviod collapse.
The main function of the valves in veins is to prevent back flow of blood. Blood in the arteries, after being pumped by the heart, are under much higher pressure than blood in veins so there is no need for valves in arteries to prevent back flow.
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Arteries have thick walls to prevent the collapsing of the wall of the blood vessel as the pressure in the arteries is very high...
Hence arteries have thick wall to prevent collapsing of the wall...
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