| Term 
 
        | Eye: Radial muscle (iris) Sphincter muscle (iris)
 |  | Definition 
 
        | SNS effect: a1: contraction++ (mydriasis) (dilation)
 
 PSNS effect:
 M3, M2: contraction+++ (miosis) (constriction)
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | SNS effect: b2: relaxation for far vision
 
 PSNS effect:
 M3, M2: contraction for near vision
 
 -this changes the shape of the lens
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | SNS effect: a: secretion+
 
 PSNS effect:
 M3, M2: secretion+++
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | SNS effect: b1 > b2 : increase in heart rate++
 
 PSNS effect:
 M2 >> M3 : decrease in heart rate+++
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | SNS effect: b1 > b2: inc in contractility and
 conduction velocity ++
 
 PSNS effect:
 M2 >> M3: dec in contractility and
 shortened AP duration
 |  | 
        |  | 
        
        | Term 
 
        | Heart: Atrioventricular Node |  | Definition 
 
        | SNS effect: b1 > b2: inc in automaticity and
 conduction velocity
 
 PSNS effect:
 M2 >> M3 : dec in conduction velocity;
 AV block+++
 |  | 
        |  | 
        
        | Term 
 
        | Heart: His-Purkinje system |  | Definition 
 
        | SNS effect: b1 > b2: inc in automaticity and
 conduction velocity
 
 PSNS effect:
 M2 >> M3: little effect
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | SNS effect: b1 > b2: inc in contractility,
 conduction velocity,
 automaticity, and rate of
 idioventricular pacemakers+++
 
 PSNS effect:
 M2 >> M3: slight dec in contractility
 |  | 
        |  |