Veins allow blood to flow only

towards heart

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away from heart

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towards lungs

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away from lungs

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Solution

The correct option is A
towards heart

The correct option is A:
Explanation of the correct option :
Veins are blood vessels that carry blood toward the heart.
Generally veins carry deoxygenated blood or carbon dioxide-rich blood from the different parts of the body to the heart.
But, in the case of the pulmonary vein the blood, and carries oxygenated blood.
Thus, veins allow blood to flow only toward the heart.
Explanation of the incorrect option:
Option B:
Arteries are blood vessels that carry oxygen-rich blood away from the heart to the different parts of the body.
Option C:
Pulmonary arteries carry blood toward the lungs.
Option D:
Pulmonary veins carry blood away from the lungs.
Final answer: Veins allow blood to flow only towards the heart.

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Veins allow blood to flow only towards the ______.

Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?

Veins have valves to prevent the backflow of blood because the blood in veins flow ________.

Q. In veins, valves are present to check backward flow of blood flowing at:

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