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Effect of Parasympathetic and Sympathetic Activation on SA Node || Autonomic Control of Heart Rate
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Video Summary:
Acetylcholine released from parasympathetic nerve endings makes cells of the SA node less excitable and thereby decreases heart rate. Whereas noradrenaline released from sympathetic nerve endings makes the cells of the SA node more excitable and thereby increases heart rate.
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00:00 Intro
00:45 Action Potential in SA Node
02:20 Parasympathetic Effect
06:03 Sympathetic Effect
07:51 Summary
Dr. Vipul Navadiya
DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.
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