Question

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 carry 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 carry blood away from the heart to different parts of the body.

Answer 1

The correct option is D

They have thick elastic walls without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.

The correct option is D.
Explanation of the correct option:

1. The blood channels known as arteries are essential to the cardiovascular system because they transport oxygen-rich blood throughout the body.
2. Our organs and tissues receive the oxygen and nutrients they require to function thanks to these tube-like vessels and the muscles inside of them.
3. Because the arteries must endure the intense pressure generated by the heart as it pumps blood, their walls are thick.
4. As a result, by regulating blood flow, the thick walls of the arteries aid in simultaneously maintaining blood pressure.
5. The arteries (red) transport oxygen and nutrients from the heart to the tissues of the body.
6. The veins (blue) return the heart's oxygen-deficient blood.
7. The aorta, the main artery leaving the heart, is where arteries are born.
8. They deliver blood that is rich in oxygen from the heart to all the body's tissues.

Explanations of the incorrect options:
Option A:

1. As veins approach the heart, they enlarge more and more.
2. The inferior vena cava carries blood from the abdomen and legs into the heart, while the superior vena cava is the major vein that transports blood from the head and arms to the heart.

Option B:

1. Fast blood pressure would lead arteries with thin walls to explode.
2. Arteries have strong walls because of this. due to the high pressure at which the heart pumps blood.
3. The intense pressure from a beating heart must be withstood by them.
4. With each contraction, the heart beats faster and more powerfully, increasing the amount of blood pumped.
5. The veins narrow, decreasing the amount of blood they can hold in the body's less vital organs.
6. The blood flow resistance of the arterioles rises as a result of their constriction.

Option C:

1. With each contraction, the heart beats faster and more powerfully, increasing the amount of blood pumped.
2. The veins narrow, decreasing the amount of blood they can hold in the body's less vital organs.
3. The blood flow resistance of the arterioles rises as a result of their constriction.

Final answer: The correct statement that describes arteries is 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.