Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire

تمرين 4

Choose the correct statement about the parasympathetic nervous system.
A) It increases heart rate.
B) Its actions back up those of the sympathetic nervous system; that is, usually its actions have the same effect as
Those of the sympathetic nervous system but start after a delay.
C) It directs blood toward the skeletal muscles.
D) none of the above