The somatic nervous system can alter the activities of its ...

[geoffrey]

The somatic nervous system can alter the activities of its targets, the skeletal muscle fibers, because
A) it is electrically coupled by gap junctions to the muscles.
B) its signals bind to receptor proteins on the muscles.
C) its signals reach the muscles via the blood.
D) its light pulses activate contraction in the muscles.
E) it is connected to the internal neural network of the muscles.

[j_sun]

I recall doing this last year, it's B, bye bye!