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Sympathetic preganglionic neurons (SPN) in the spinal cord are important for controlling the heart, blood vessels and release of catecholamines from the adrenal medulla. The activity of SPN is predominantly controlled by nerve pathways originating in the brain; but SPN also receive information from interneurons, which lie near them in the spinal cord and relay peripheral sensory or other central nervous...
Sympathetic ganglia are important components of the neural circuitry for regulation of vascular tone and cardiac dynamics and may contribute to the pathophysiology of hypertension and heart failure. For a long time, these ganglia were viewed as simple relay stations where acetylcholine mediated the transfer of signals from the central nervous system to peripheral effector neurons. However, new information...
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