Aging is associated with greater rigidity in which component of the circulatory system?

Aging is associated with greater rigidity in which component of the circulatory system?

• A. Not specified
• B. False
• C. Only in certain arteries
• D. True

Answer: (D)

Aging and arterial stiffness go hand in hand. The part of the circulatory system that becomes stiffer with age is the arteries, especially the large elastic arteries like the aorta. Structural changes in the vessel walls—loss of elastin, increased collagen, smooth muscle changes, and calcification—reduce arterial compliance. As a result, arteries don’t stretch as well to dampen the heartbeat, so systolic blood pressure tends to rise and pulse pressure widens. This arterial stiffening also diminishes the aorta’s buffering effect on the heart’s pumping, increasing workload on the heart over time. So, aging is associated with greater rigidity in arteries, making the statement true.

Aging and arterial stiffness go hand in hand. The part of the circulatory system that becomes stiffer with age is the arteries, especially the large elastic arteries like the aorta. Structural changes in the vessel walls—loss of elastin, increased collagen, smooth muscle changes, and calcification—reduce arterial compliance. As a result, arteries don’t stretch as well to dampen the heartbeat, so systolic blood pressure tends to rise and pulse pressure widens. This arterial stiffening also diminishes the aorta’s buffering effect on the heart’s pumping, increasing workload on the heart over time. So, aging is associated with greater rigidity in arteries, making the statement true.