Motor Neurons Alter Skeletal Muscle Activities by Releasing Neurotransmitter Because

Multiple Choice

Motor neurons alter skeletal muscle activities by releasing neurotransmitter because

A) they are electrically coupled by gap junctions to the muscles.
B) their signals bind to receptor proteins on the muscles.
C) their signals reach the muscles via the blood.
D) their light pulses activate contraction in the muscles.
E) they are connected to the internal neural network of the muscles.