Sympathetic Nerve Stimulation of the Myocardium

Question

Sympathetic nerve stimulation of the myocardium
A) causes a (+) inotropic effect.
B) decreases cardiac output.
C) decreases heart rate.
D) decreases stroke volume.

Accepted Answer

Sympathetic nerve stimulation of the myocardium causes a positive inotropic effect, which means it increases the force of contraction of the heart muscle, leading to an increase in cardiac output. It may also increase heart rate and stroke volume.