Cardiac Output May Be Increased by A

Question

Cardiac output may be increased by a
A) greater-than-normal heart rate.
B) lower-than-normal stroke volume.
C) lower-than-normal stroke volume and heart rate.
D) greater-than-normal stroke volume.
E) greater-than-normal stroke volume and heart rate.

Accepted Answer

Cardiac output is the product of heart rate and stroke volume. Therefore, cardiac output may be increased by a greater-than-normal stroke volume and heart rate.