Which of the following structures is poorly innervated by the parasympathetic nervous system and, therefore, an increase in parasympathetic activity has little effect on this structure?
A) atrioventricular node
B) sinoatrial node
C) ventricles
D) conduction pathway
E) Purkinje fibers

Question

Quizplus · Accepted Answer

The ventricles are poorly innervated by the parasympathetic nervous system compared to other parts of the heart, such as the atrioventricular node, sinoatrial node, and the conduction pathway. Therefore, an increase in parasympathetic activity has little effect on the ventricles.

Which of the Following Structures Is Poorly Innervated by the Parasympathetic