Cardiac Reserve Is

Multiple Choice

Cardiac reserve is

A) the potential increase in stroke volume someone would show if they engaged in athletic training.
B) the increase in cardiac output an individual is capable of demonstrating during vigorous exercise.
C) the amount of blood left in the heart after the ventricle has contracted during cardiac cycles at rest.
D) the blood that the heart uses to nourish its cardiac muscle and does not put into general circulation.