The defecation reflex involves
A) sympathetic nerves.
B) relaxation of both the internal and external anal sphincters.
C) conscious control of both the internal and external anal sphincters.
D) relaxation of the ileocecal valve to move feces into the rectum.
E) parasympathetic nerve control from sacral nerves.
Question 2
Which of the following hormones increases and prolongs effects of the sympathetic nervous system?
A) cortisol
B) parathyroid hormone
C) insulin
D) growth hormone
E) acetylcholine