The condition in which stimulation of the vagus nerve causes changes in heart rate is known as:
A)vagal tone.
B)ventricular tone.
C)vascular tone.
D)valvular tone.

Question

Quizplus · Accepted Answer

Vagal tone refers to the influence of the parasympathetic nervous system on the heart through the vagus nerve. Stimulation of the vagus nerve can cause a decrease in heart rate and a decrease in the force of contraction, which is known as a negative chronotropic effect. This is an important aspect of regulating the cardiovascular system and maintaining a healthy heart. Ventricular tone refers to the contractility of the ventricles of the heart, vascular tone refers to the degree of constriction or dilation of blood vessels, and valvular tone refers to the function of heart valves. While these all play important roles in cardiovascular health, they do not specifically relate to the influence of the vagus nerve on heart rate.

The Condition in Which Stimulation of the Vagus Nerve Causes