What factor seems to be the underlying cause of the age-related decline in the heart's ability to respond quickly to demands for greater cardiac output?

Question

Quizplus · Accepted Answer

The underlying cause of the age-related decline in the heart's ability to respond quickly to demands for greater cardiac output is primarily attributed to a decrease in sinus node adrenoreceptors. This decrease affects the heart's responsiveness to adrenaline and noradrenaline, leading to a slower heart rate response during physical activity or stress.

What Factor Seems to Be the Underlying Cause of the Age-Related