Of the following statements concerning the sympathetic and parasympathetic branches of the nervous ...

Of the following statements concerning the sympathetic and parasympathetic branches of the nervous
  system, which is true?
 
  a. The sympathetic system controls external stimuli, while the parasympathetic system
  controls internal stimuli.
  b. The sympathetic system generally produces an increased physical activity, while the
  parasympathetic system produces a decrease in physical activity.
  c. Both nervous systems stimulate the activities of many organs.
  d. Both nervous systems release norepinephrine.
  e. The sympathetic system is under voluntary control, and the parasympathetic system is
  under involuntary control.

Question 2

Autonomic nervous system pathways have ____.
 
  a. three neurons
  b. two neurons
  c. one neuron
  d. four neurons
  e. no neurons