Chapter 15, Problem 17TYR

Summary Introduction

Introduction:

Pre- and post-ganglionic neurons are the functional components of the central nervous system. They are the neural circuits in which the command system from the brain passes to the preganglionic neurons that emit the neurotransmitter acetylcholine, and this in turn is received by the synaptic cleft of postganglionic nerve fibers. These postganglionic nerve fibers secrete the secondary neurotransmitter like norepinephrine into the target cells, which is received by the adrenergic receptors.