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Heart Receptors

Sympa/Para Receptors

QuestionAnswer
Sympa SA Node Increase Heart Rate ++ B1>B2
Sympa Atria Increase contractility and conduction velocity ++ B1>B2
Sympa AV Node Increase in automaticity and conduction velocity ++ B1>B2
Sympa His-Purkinje System Increase in automaticity and conduction velocity B1>B2
Sympa Ventricle Increase in contractility, conduction velocity, automaticity and rate of IV pacemakers +++ B1>B2
Para SA Node Decrease heart rate +++ M2>>M3
Para Atria Decrease in contractility ++ and shorter AP duration M2>>M3
Para AV Node Decrease in conduction velocity / AV block +++ M2>>M3
Para His-Purkinje System Little effect M2>>M3
Para Ventricle Slight decrease in contractility M2>>M3
Created by: jpgalyon