Question 30 All are true for blood vessels except: AArterioles are the site of least resistance to blood flow. BThe capillaries are thin-walled structures lined with a single layer of endothelial cells, which is surrounded by a basal lamina. CThe volume of blood contained in the veins is called the unstressed volume. DThe arteries are thick-walled structures with extensive development of elastic tissue, smooth muscle, and connective tissue. ← PreviousNext →
