Action Potentials in Neurons in the Inspiratory Center of the Medulla

question 85

Multiple Choice

Action potentials in neurons in the inspiratory center of the medulla oblongata 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