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Heart Receptors
Sympa/Para Receptors
Question | Answer | |
---|---|---|
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 |