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.

Question

Quizplus · Accepted Answer

Cardiac output, which is the amount of blood pumped by the heart per minute, is determined by the product of heart rate (the number of times the heart beats per minute) and stroke volume (the amount of blood pumped by the heart with each beat). Therefore, the correct statement is D. A is incorrect because pulse rate is not a determinant of cardiac output. B is incorrect because stimulation of the sympathetic nerves actually increases cardiac output. C is incorrect because vagal discharge decreases cardiac output.

Which of the Following Statements Is Correct About Cardiac Output