Multiple Choice
An ejection fraction of 30% is
A) normal.
B) characteristic of a healthy person who is engaged in aerobic exercise.
C) characteristic of a failing heart.
D) the amount of oxygenated hemoglobin in the blood in the left ventricle.
Correct Answer:

Verified
Correct Answer:
Verified
Q67: An increased preload<br>A)decreases cardiac output.<br>B)increases stroke volume.<br>C)increases
Q68: Heart rate and stroke volume determine<br>A)hematocrit.<br>B)total blood
Q69: Sympathetic stimulation to the heart<br>A)decreases stroke volume.<br>B)increases
Q70: Which of the following most accurately describes
Q71: What happens during ventricular diastole?<br>A)The ventricles are
Q73: Which of the following is least related
Q74: A drug (e.g. ,atropine) that blocks the
Q75: Which of the following is not the
Q76: Under what condition is end-diastolic volume (EDV)
Q77: A very anxious person appears in the