Question

Which of the following is different from others in the absence of muscular coat?

• A. Arteries
• B. Veins
• C. Capillaries
• D. Arterioles

Answer 1

The correct option is C

Capillaries

The arteries carry the blood away from the heart; the capillaries enable the actual exchange of water and chemicals between the blood and the tissues, and the veins carry blood from the capillaries back toward the heart. Capillaries are any fine branching blood vessels that form a network between the arterioles and venules. The arteries and veins have three layers while capillaries consist of little more than a layer of endothelium and occasional connective tissue.