Test your knowledge of the effects of autonomic regulation of the heart by classifying each characteristic as being related to sympathetic regulation or parasympathetic regulation.

Sympathetic:
Parasympathetic:

Characteristic:
-Involves NE and Epi binding to beta-adrenergic receptors
-Causes increased ventricular contractility
-Leads to increased pumping of Ca² back into the sarcoplasmic reticulum
-Increases AV node cell conduction rate by increasing Ca² flux
-Increases the AV nodal delay
-Leads to phosphorylation of contractle proteins increasing the maximum peak and rate of force development
-Postganglionic neurons innervate mainly cells found in the atria
-Postganglionic neurons innervate the entire heart
-Decreases heart rate by decreasing the pacemaker potential in SA node cells
-Involves ACh binding to muscarinic receptors
-Decreases the contractility of atrial muscle cells