An Increase in Sympathetic Input and a Decrease in Parasympathetic

An increase in sympathetic input and a decrease in parasympathetic (vagal) input to the heart causes

A) the pacemaker to produce action potentials more quickly.
B) an increase in the speed of contraction through the atrioventricular node.
C) an increase to the force of ventricular contraction.
D) an increase in contraction of peripheral arteries.
E) All of the answers are correct.

Correct Answer:

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