Question

Veins can be differentiated from arteries, as the veins have:

• A. Valves
• B. Thicker walls
• C. Oxygenated blood
• D. Red blood cells

Answer 1

The correct option is A Valves

Veins carry deoxygenated blood (except pulmonary vein) from all parts of the body to the heart. To prevent the backflow of this blood, veins have valves.

Arteries carry oxygenated blood. The blood flows at very high pressure in the arteries. That is why they have thicker walls.

Both arteries and veins carry blood that has red blood cells in it.

So, the correct answer is option A.