EEOB 2520 Lecture Notes - Lecture 8: Sympathetic Nervous System, Adrenal Medulla, Adrenal Gland
9 Sep 2018
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Function: regulate automatic/visceral acts without us having to think about them. Compared to the somatic, the autonomic can get a particular organ to do more (excite) or do less (inhibit); this is through the two opposing systems. Hierarchy: sympathetic and parasympathetic are underneath the autonomic of the efferent of the peripheral nervous system. Sympathetic revs things up and parasympathetic slows them back down. Most effectors are innervated by both we can rev them up and back it back down. Two neurons in series (to get to the effectors) [50] Second neuron always has its cell body out in the pns as opposed to most of the efferent neurons having their cell bodies in the cns. Clusters of second neuron"s cell bodies many of them going out to a particular organ in the same place, get grouped together = ganglia (not nuclei the same structure in the cns) Preganglionic always has cell body in cns; postganglionic always communicating with effector.
