The heart muscle commonly weakens with age. What is a consequence of this fact?
A) The heart beats faster but pumps with less force.
B) Fatty deposits and other substances clog narrowed coronary vessels.
C) Blood pressure lowers because of systemic vasodilation.
D) The time required for the heart's diastolic–systolic cycle decreases.
A
Feedback:
The statement in choice B is true, but age-weakened heart muscle is not the cause. Blood pressure may actually rise as an effect of choice B. The opposite of the statement in choice D is true.
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