Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.)
-Stroke volume can be increased by increasing end-diastolic volume and _____.
A)stroke volume
B)end-diastolic volume
C)cardiac output
D)heart rate
E)end-systolic volume
F)sympathetic activity

Question

Quizplus · Accepted Answer

Sympathetic activity can increase stroke volume by increasing contractility of the heart, leading to a more forceful contraction and decreased end-systolic volume. This results in a higher stroke volume and cardiac output.

Answer: B and F 
 End-diastolic volume is the volume of blood in the ventricles at the end of diastole, before the next contraction. Increasing end-diastolic volume through venous return or preload can increase stroke volume through increased stretch of the cardiac muscle fibers. This can be further augmented with sympathetic activity increasing contractility.

Match the Terms, Labelled A