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.

Question

Quizplus · Accepted Answer

Cardiac output is the amount of blood pumped by the heart in one minute. It is determined by multiplying stroke volume (the amount of blood pumped by the heart in one beat) by heart rate (the number of beats per minute). Therefore, cardiac output is determined by both heart rate and stroke volume. Sympathetic nerve stimulation typically increases heart rate and stroke volume, leading to an increase in cardiac output, while vagal discharge has the opposite effect.

Cardiac Output