Question

Cardiac output is determined by

• A. Heart rate
• B. Stroke volume
• C. Both A and B
• D. None of these

Answer 1

The correct option is C Both A and B

The human heart has four chambers, two atria, and two ventricles. The atria and ventricles contract to pump the blood from the heart. The contraction phase of the heart is known as systole and the relaxation phase is known as a diastolic phase. The rhythmic contraction and relaxation for a particular duration is estimated by cardiac cycle or heartbeat.

Cardiac output is the volume of blood pumped by each ventricle in one minute. It is determined by two factors heart rate and heart stroke. It is calculated by the product of the heart rate and stroke volume.

So, the correct answer is option C.