Question

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.

Answer 1

Answer:

The correct statement about cardiac output is A.

Explanation:

Cardiac output refers to the amount of blood the heart pumps through the circulatory system in a minute. The heart rate and stroke volume; the amount of blood put out by the left ventricle of the heart in one contraction determine the cardiac output. In cardiac output, a slow heart rate increases end diastolic volume, stroke volume, and force of contraction.