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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 |