| Noun | 1. | autonomic ganglion - any of the ganglia of the autonomic system whose unmyelinated fibers innervate the internal organsganglion - an encapsulated neural structure consisting of a collection of cell bodies or neurons otic ganglion, otoganglion - an autonomic ganglion whose postganglionic fibers are distributed to the parotid gland ANS, autonomic nervous system - the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands |