Increased sympathetic activity through the release of norepinephrine and epinephrine from the adrenal gland results in which of the following changes in the heart?

Question

Quizplus · Accepted Answer

Increased sympathetic activity through the release of norepinephrine and epinephrine increases the heart rate,increases conduction velocity throughout the AV node,increases the contractility of the heart muscle,and increases the irritability of the heart.

Increased Sympathetic Activity Through the Release of Norepinephrine and Epinephrine