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cardio conduction

TermDefinition
cardioinhibitory region PNS. decrease heart rate by decrease in action potential
cardioaccelerator region SNS. increase HR by increase in action potential
Autonomic NS in cardiac adjusts HR via cardiac centers
cardiac center location medulla oblongata
plateau in action potential in the contractile cells bc of slow CA++. causes long refractory period
cardiac conduction system SV node, AV node, Bundle of His, Purkinje fibers
contractile cells 99% of cardiac cells. cause changes in size of heart
conductive cells 1% of cardiac cells. generates AP
cardiac muscle cells branches, single nuclei, striated, intercalated discs
Created by: huntybaby
 

 



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