Which statement is NOT mentioned as an aging change in the cardiovascular system?

Which statement is NOT mentioned as an aging change in the cardiovascular system?

• A. Increased cardiac muscle strength
• B. Heart valves thicken and become rigid
• C. Arteries become less elastic
• D. Capillary walls thicken and exchange slows

Answer: (A)

Age-related changes in the cardiovascular system tend to involve stiffening and thickening of structures rather than an increase in pumping strength. As people age, arteries lose elasticity (arteriosclerosis), making the vessels less able to expand with each heartbeat. The heart valves often thicken and become more rigid due to calcification, which can affect how well they open and close. Capillary walls can also thicken and exchange across them can slow, impacting tissue perfusion. In contrast, increased cardiac muscle strength is not a typical aging change; aging generally reduces maximal heart rate and cardiac reserve, and performance can decline rather than improve. So the statement about stronger heart muscle does not fit the expected aging pattern.

Age-related changes in the cardiovascular system tend to involve stiffening and thickening of structures rather than an increase in pumping strength. As people age, arteries lose elasticity (arteriosclerosis), making the vessels less able to expand with each heartbeat. The heart valves often thicken and become more rigid due to calcification, which can affect how well they open and close. Capillary walls can also thicken and exchange across them can slow, impacting tissue perfusion. In contrast, increased cardiac muscle strength is not a typical aging change; aging generally reduces maximal heart rate and cardiac reserve, and performance can decline rather than improve. So the statement about stronger heart muscle does not fit the expected aging pattern.