Pharmacology 6
Subject:
Biology [1]
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Pharmacology 6 [2]
Pharmacology Lecture 6 Autonomic Pharmacology Describe the anatomical organization of the sympathetic and parasympathetic divisions of the autonomic nervous system (ANS). Sympathetic division ? sympathetic nerves arise from the thoracic and lumbar divisions (thoracolumbar) of the spinal cord. Preganglionic sympathetic fibers originate from neurons in the intermediolateral columns of the spinal cord, are carried over the ventral roots to paravertebral and prevertebral ganglia, and synapse with postganglionic fibers in the sympathetic chain (paravertebral) and abdominal organs (prevertebral). Collateral fibers connect preganglionic fibers with ganglion cells for mass discharge