Action Potentials in Neurons in the Inhalatory/inspiratory Center of the Medulla

Multiple Choice

Action potentials in neurons in the inhalatory/inspiratory center of the medulla result in action potentials in the ________ nerves to the diaphragm,which in turn cause ________ of the muscle,resulting in a/an ________ in the volume of the thoracic cage.

A) Motor; contraction; decrease
B) Parasympathetic; contraction; decrease
C) Sympathetic; contraction; increase
D) Motor; contraction; increase
E) Sympathetic; relaxation; increase