Which of these factors is NOT involved in promoting venous return to the heart
A)Parasympathetic stimulation decreases venous pressure.
B)The skeletal muscle pump squeezes blood through the veins.
C)The respiratory pump provides a pressure gradient between the lower and chest veins.
D)There is vasodilation of veins.

Question

Quizplus · Accepted Answer

Parasympathetic stimulation primarily affects the heart rate and force of contraction but does not directly decrease venous pressure to promote venous return. The other options (B, C, D) are mechanisms that facilitate venous return to the heart.

Which of These Factors Is NOT Involved in Promoting Venous