Select the correct statement about cardiac output.
A) A slow heart rate increases end diastolic volume, stroke volume, and force of contraction.
B) Decreased venous return will result in increased end diastolic volume.
C) If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased.
D) Stroke volume increases if end diastolic volume decreases.

Question

Quizplus · Accepted Answer

A slow heart rate allows for more filling time, increasing the end diastolic volume, which in turn increases stroke volume and force of contraction.

Option B is incorrect because decreased venous return would result in decreased end diastolic volume.

Option C is incorrect because if a semilunar valve were partially obstructed, the affected ventricle would have to work harder to eject blood, resulting in an increased end systolic volume.

Option D is incorrect because stroke volume is directly proportional to end diastolic volume, meaning that it would decrease if end diastolic volume decreases.

Select the Correct Statement About Cardiac Output