Parasympathetic postganglionic fibers
A)arise from the ganglion chain located along either side of the spinal cord
B)are cholinergic
C)secrete a chemical messenger that binds to muscarinic receptors
D)have characteristics a and b
E)have characteristics b and c

Question

Quizplus · Accepted Answer

Parasympathetic postganglionic fibers are cholinergic, meaning they release the neurotransmitter acetylcholine. This chemical messenger binds to muscarinic receptors on target organs. These fibers arise from ganglia located near or within the organs they innervate, rather than from the ganglion chain along the spinal cord. Therefore, the best choice is E, as it includes both characteristics b and c.

Parasympathetic Postganglionic Fibers