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vitfil [10]
3 years ago
14

Sympathetic fibers leave the spinal cord in the ________.

Biology
1 answer:
AlexFokin [52]3 years ago
5 0

The correct answer is: C) thoracolumbar region, and the postganglionic fibers secrete norepinephrine

The pathway of autonomic nervous system (sympathetic and parasympathetic) involves two:

                       1. Preganglionic neuron - from CNS (spinal cord or brain) to the autonomic ganglion, all of these fibers release acetylcholine (Ach)

                       2. Postganglionic neuron - from the autonomic ganglion to the cells of the effector organ, parasympathetic postganglionic fibers release acetylcholine while sympathetic postganglionic fibers release norepinephrine.

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