Question

An artery is differentiated from a vein in having

• A. thick muscular wall
• B. double layer of endothelial cells
• C. thin muscular wall
• D. no endothelial cells

Answer 1

The correct option is A

thick muscular wall

The correct option is A

Artery.

1. Arteries are the blood vessels that carry blood away from the heart.
2. Since the heart pumps the blood into the arteries with a significant force, the blood exerts a greater pressure on the arterial walls.
3. To resist this pressure, the arteries have rigid, highly muscular, and thicker walls.

Veins

1. Veins are the blood vessels that carry blood toward the heart.
2. Blood in the veins flows smoothly and does not exert high pressure on the walls.
3. Veins have comparatively thinner walls than arteries.

Thus, an artery is differentiated from a vein in having a thick muscular wall.