Blood in arteries flow under high pressure. Therefore, they have _______ and elastic walls.

wide

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thick

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thin

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narrow

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Solution

The correct option is B thick
Arteries are blood vessels that carry oxygen-rich blood from the heart to the tissues of the body. Thicker walls of arteries make them capable of withstanding high blood pressures.

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Q. Blood in arteries flow under high pressure. Therefore, they have and elastic walls.

Question 21
Choose the correct statement that describes arteries.

(a) They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart.
(b) They have thin walls with valves inside, blood flows under low pressure and carries blood away from the heart to various organs of the body.
(c) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body.
(d) They have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body.

Blood flows at a high pressure through arteries. Hence, it makes sense for arteries to have _______ and elastic walls.

Q. Assertion: Arteries have thick elastic walls.
Reason: Blood flow in arteries is rapid and at high pressure.

Blood in the arteries flow with _______ pressure than blood in the veins. Therefore,the walls of the arteries are ________ than veins.

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Blood in arteries flow under high pressure. Therefore, they have _______ and elastic walls.

The correct option is B thickArteries are blood vessels that carry oxygen-rich blood from the heart to the tissues of the body. Thicker walls of arteries make them capable of withstanding high blood pressures.

The correct option is B thick
Arteries are blood vessels that carry oxygen-rich blood from the heart to the tissues of the body. Thicker walls of arteries make them capable of withstanding high blood pressures.