Which of the Following Statements is Correct About Cardiac Output

Question

Which of the following statements is correct about cardiac output?
A) Cardiac output is determined by the heart rate and pulse.
B) Stimulation of the sympathetic nerves decreases cardiac output.
C) Vagal discharge increases cardiac output.
D) Cardiac output is determined by heart rate and stroke volume.

Accepted Answer

Cardiac output is determined by the amount of blood the heart pumps per minute (stroke volume) and the number of times the heart beats per minute (heart rate). Stimulation of the sympathetic nerves increases cardiac output, while vagal discharge decreases it. Therefore, options A and B are incorrect, and option C is also incorrect as it states the opposite of what actually happens.