The ____ nerves to the heart alter cardiac output by decreasing heart rate.
A) motor.
B) sensory.
C) sympathetic.
D) vagus
E) none of these answers.

Question

Quizplus · Accepted Answer

The vagus nerves, which are part of the parasympathetic nervous system, innervate the heart and can decrease heart rate by inhibiting the electrical activity of the sinoatrial (SA) node, the natural pacemaker of the heart. This results in a decrease in cardiac output.

The ____ Nerves to the Heart Alter Cardiac Output by Decreasing