Question

effects of the sympathetic nervous system
what are the roles of the sympathetic nervous system? select all that apply.
decreasing secretion of bile from the gall bladder
constricting pupil size
relaxing smooth muscle in the bladder
increasing rate of cardiac muscle contraction

Explanation:

• The sympathetic nervous system is responsible for the "fight - or - flight" response.
• It decreases bile secretion from the gall bladder as part of diverting resources away from digestion during stress.
• It relaxes the smooth muscle in the bladder (to allow for possible urination if needed in a fight - or - flight situation).
• It increases the rate of cardiac muscle contraction to pump more blood to the muscles.
• However, it dilates (not constricts) the pupil to allow more light in (for better vision during a stress response).

Answer:

• Decreasing secretion of bile from the gall bladder
• Relaxing smooth muscle in the bladder
• Increasing rate of cardiac muscle contraction