Presynaptic splanchnic neurons and postsynaptic chromaffin cells have remained obscure. Nervous system has been appreciated for many decades, the mechanisms underlying transmission between While the importance of the sympatho-adrenal branch of the autonomic These fibers pass into the gland and synapse onto chromaffin cells, which synthesize, store, and secrete cate-Ĭholamines and vasoactive peptides. The effectors discharge as a unit to drive global and immediate changes in whole-body physiology.ĭescending sympathetic information is conveyed to the adrenal medulla via preganglionic splanchnic fibers.
Disturbances that threaten homeostasis elicit activation of the sympathetic nervous system (SNS) and the adrenal
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