The term used to describe the amount of blood in the ventricle available to be pumped out of the heart during the next contraction is

Which of the following statements best describes an opportunistic infection (ol)? a. ols are common only to people with healthy immune systems b. ols are more frequent in the earlier stages of hiv c. ols are the common cause of death of people with hiv/aids d. ols can be deadly to perfectly healthy people.