Sympathetic preganglionic and postganglionic fibers synapse… Post author By Anonymous Post date August 23, 2025 Questions Sympаthetic pregаngliоnic аnd pоstgangliоnic fibers synapse mostly within ________, while parasympathetic preganglionic and postganglionic fibers synapse mostly within _________. Show Answer Hide Answer Related Posts:Sympathetic preganglionic neurons are ________ and…BOTH preganglionic sympathetic and preganglionic…Postganglionic fibers of the sympathetic nervous… ← Which structures below are involved in the auditory pathway? → What does Basking in Reflected Glory (BIRG) mean?