Question

in both divisions of the ans, their __________ release __________. preganglionic fibers; ne postganglionic fibers; ach postganglionic fibers; ne preganglionic fibers; ach i dont know yet

Explanation:

In the autonomic nervous system (ANS), preganglionic fibers (regardless of whether it is sympathetic or parasympathetic division) release acetylcholine (ACh). Post - ganglionic fibers have different neurotransmitters (sympathetic post - ganglionic usually release norepinephrine (NE) and parasympathetic post - ganglionic release ACh).

Answer:

preganglionic fibers; ACh