Question

assertion Veins have valves .

reason the pressure for the flow is far less compared to arteries. answere me fast
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Answer 1

Answer:

Arteries have thick walls so they can handle the high pressure and velocity that expels your blood out of your heart. Veins carry blood back to your heart from the rest of your body. The pressure of the blood returning to the heart is very low, so the walls of veins are much thinner than arteries.

Explanation:

Answer 2

Both the Assertion and Reason are true but the reason is not the correct explanation of the assertion.

BLOOD VESSELS -

• In the human circulatory system, there are three types of blood vessels namely veins, arteries, and capillaries.
• The arteries carry blood from the heart to the body organs and have thick walls. The blood pressure from the heart is very strong so the blood flows only in one direction.
• Veins have a thin wall and bring blood back to the heart. It consists of valves to prevent backflow and permit the only one-directional flow of the blood.
• The blood in the veins tends to flow backward because of the low pressure in the vessels.