Question

Which one of the following is not applicable to vein? .

• A. Movement of blood is slow
• B. Thin walled
• C. Valves present
• D. Transport deoxygenated blood

Answer 1

The correct option is D Transport deoxygenated blood

Veins and arteries are the two important blood vessels that are involved in the transportation of the blood from the tissues and to the tissues respectively. In arteries, the oxygenated blood moves under great pressure generated through the ventricles. Due to this, they have thick walls and no valve as blood never flows backward under an immense pressure. In veins, the blood moves slower than arteries, so they have thin walls and have valves to prevent the backflow of the blood. Since veins carry blood from the tissues to the heart, they carry deoxygenated blood. However, the pulmonary vein which connects left atrium of the heart to the lungs carries oxygenated blood.

Hence, the correct answer is 'Transport of deoxygenated blood'