Question

What are the two determinants of cardiac output?

1) heart rate and ventricular volume
2) size of the heart and blood pressure
3) heart rate and stroke volume
4) size of the ventricles and stroke volume
5) blood pressure and heart size

Answer 1

The two determinants of cardiac output are heart rate and stroke volume. Heart rate refers to the number of times the heart contracts per minute, while stroke volume is the volume of blood pumped into the aorta per contraction of the left ventricle.

Step-by-step explanation:

The two determinants of cardiac output are heart rate and stroke volume. Cardiac output is the measurement of blood flow from the heart through the ventricles, and is usually measured in liters per minute. Heart rate refers to the number of times the heart contracts per minute, while stroke volume is the volume of blood pumped into the aorta per contraction of the left ventricle.