Which of the following does NOT affect the stroke volume of the heart?
A)Oxygen concentration of the blood
B)Strength of contraction of the ventricles
C)Blood electrolyte concentration
D)Venous return to the right atrium

Question

Quizplus · Accepted Answer

While the oxygen concentration of the blood does affect cardiac output, it does not directly affect stroke volume. Stroke volume is primarily determined by the strength of contraction of the ventricles and the volume of blood returning to the heart (venous return). Blood electrolyte concentration can also affect cardiac output by altering the action potential and contractility of the heart.

Which of the Following Does NOT Affect the Stroke Volume