Question

Which statement by the nursing student is an accurate response concerning the vascular system?

a. The walls of the arteries are thinner, and the walls of the veins are thicker."
b. The arteries are high-pressure systems, and the veins are low-pressure systems."
c. The arteries contain intraluminal valves, and the veins are devoid of intraluminal valves."
d. The arteries build up metabolic wastes, and the veins cause symptoms of oxygen deficit."

Answer 1

The accurate statement concerning the vascular system is that the arteries are high-pressure systems, and the veins are low-pressure systems. Arteries have thicker walls and smaller lumens, while veins have thinner walls and larger lumens. Veins often contain valves that assist blood flow towards the heart.

Step-by-step explanation:

The accurate statement concerning the vascular system is b. The arteries are high-pressure systems, and the veins are low-pressure systems.

Arteries and arterioles have thicker walls than veins and venules because they are closer to the heart and receive blood that is surging at a far greater pressure. Arteries have smaller lumens than veins, a characteristic that helps to maintain the pressure of blood moving through the system.

The venous system is a lower-pressure system, containing veins that have larger lumens and thinner walls. They often appear flattened. Many veins of the body, particularly those of the limbs, contain valves that assist the unidirectional flow of blood toward the heart.