Cardiac Output

Question

Cardiac output
A) is determined by heart rate and pulse.
B) decreases in response to sympathetic nerve stimulation.
C) increases in response to vagal discharge.
D) is determined by heart rate and stroke volume.

Accepted Answer

Cardiac output is determined by both heart rate and stroke volume, which is the amount of blood pumped by the heart with each beat. Sympathetic nerve stimulation usually increases cardiac output, while vagal discharge decreases it. Pulse, on the other hand, is a measurement of heart rate and does not directly determine cardiac output.