Stroke volume depends on
A) end-diastolic volume.
B) the contractility of the ventricle.
C) the pressure required to pump blood into the aorta.
D) all of the above
E) none of the above

Question

Quizplus · Accepted Answer

Stroke volume, or the amount of blood pumped out of the left ventricle in one heartbeat, is influenced by three main factors: end-diastolic volume (the amount of blood in the ventricle just before it contracts), the contractility of the ventricle (the strength of its contraction), and the pressure required to pump blood into the aorta (afterload). Therefore, all three options (A, B, and C) are correct, and the correct answer is D.

Stroke Volume Depends on