Cardiovascular effects of the sympathetic division include all except ________.
A) constriction of most blood vessels
B) dilation of the vessels serving the skeletal muscles
C) increase of heart rate and force
D) dilation of the blood vessels serving the skin and digestive viscera

Question

Quizplus · Accepted Answer

The sympathetic division of the autonomic nervous system generally causes vasoconstriction in most blood vessels, including those serving the skin and digestive viscera. However, it causes vasodilation in the vessels serving the skeletal muscles to increase blood flow to these muscles during exercise or stress. It also increases heart rate and force to pump more blood to the body during these situations. Therefore, the option that does not belong here is D, which describes vasodilation of the blood vessels serving the skin and digestive viscera.

Cardiovascular Effects of the Sympathetic Division Include All Except ________