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 for correct option:

1. Arteries have thick elastic walls because blood flows in them under high pressure during systole.
2. Valves are present in the vein to prevent any backflow of blood as the pressure of blood flow is less in the vein.
3. valves are absent in the artery.
4. The artery carries blood away from the heart except for the pulmonary artery.

Explanations for the incorrect option:

Option A:

1. Blood in the artery flows from the heart to the organs.
2. Except for the pulmonary artery, blood flows from the body to the heart.

Option B:

1. Arteries have thick elastic wall
2. Blood flows under high pressure.
3. Valves are absent in arteries present in veins.

Option C:

In arteries, blood flows under high pressure

Final answer: Arteries 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.