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Heart Contractility Control
by arjacob1 in science-technology
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Description
Parasympathetics act on the SA and AV nodes (via acetylcholine release) to slow the heart down. Sympathetics act on the SA and AV nodes and the ventricular myocardium (via NE release) to speed the heart up. Heart image is from: https://en.wikipedia.org/wiki/Sinoatrial_node#/media/File:Reizleitungssystem_1.png
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