HMS, BM EQ-Bank 861 MC Which blood vessel is characterised by having a thick, elastic wall with layers of smooth muscle? Vein Artery Capillary Venule Show Answers Only \(B\) Show Worked Solution B is correct. Arteries have thick, elastic walls with layers of smooth muscle to withstand the pressure of blood being pumped from the heart. Other Options: A is incorrect: Veins have thinner walls with less elasticity and muscle than arteries. C is incorrect: Capillaries have extremely thin walls (only one cell thick) to allow for exchange of materials. D is incorrect: Venules are small veins that collect blood from capillaries and have thinner walls than arteries.