A.
Acetylcholine is the transmitter released by most parasympathetic postganglia fibers
B.
The transmitter released by autonomic preganglionic fibers is acetylcholine
C.
The transmitter released by somatic motor nerve endings is acetylcholine
D.
Norepinephrine is the transmitter released by all sympathetic postganglionic fibers
E.
Purine and peptide transmitters are released by nerve plexus cells in the gastrointestinal wall