Regulation Of The Heart By The Autonomic Nervous System

Question 1

What are the two stimulations that regulate the heart?

Answer 1

Sympathetic and parasympathetic stimulation

Question 2

What is the effect of sympathetic stimulation?

Answer 2

Increases the heart rate (positive chronotropic effect) and the force of contraction (positive inotropic)

Question 3

What is the effect of parasympathetic stimulation?

Answer 3

Decreases the heart rate (negative chronotropic effect)
No significant effect on contractility as they don’t supply ventricles