9-Autonomic Nervous System Figs BW

In sympathe division the axon leave spinal cord

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Unformatted text preview: cell bodies of preganglionic autonomic neurons. in sympathe division, the axon leave spinal cord, synapse the paravertebral ganglia chain. some sympathetic axon go right through the 1. some pregang axon go through 1 2. postgang go affect target tissue in the head. in lower level of axis, some pregang and make synapse on 3 synapse called prevertebral ganglia. the third target of pregang sympat neuron is adrenal medulla. these are longest pre neuron. the t1-l2 (thoracolumn) symp summarize: the ganglia where the synap between pre and post is locate far away from target organ, making postganglia long 2 Sympathetic = Thoracolumbar 1 – cervical ganglia 2 – prevertebral ganglia 3 – adrenal medulla Parasympathetic = Craniosacral 3 Adrenal Medulla cells of adrenal medulla are nerve cells. if you remove chromatin cell, they will differentiate into neurons (sympathetic neuron). at intermediate horn (where cell bodies are), go to adrenal medulla, synapse at chromatin cell, release epinephrine, hormone that is release in blood. Autonomic Pathways para locate at top at brainstem and sacral (s2-s4). the outflow of prega is craniosacral. the prega axon (blue) tend to be long. go all the way to target tissue. at target tissue is where they encounter post gang. in para, the preg axon are long and at ganglion (where synpase occ...
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This document was uploaded on 03/09/2014 for the course EXSC 301 at USC.

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