The Difference Between a Three- and a Two-Neuron Reflex Is

Question

The difference between a three- and a two-neuron reflex is that a three-neuron reflex
A) passes through the dorsal root ganglion
B) includes an efferent neuron
C) includes an interneuron
D) includes an afferent neuron

Accepted Answer

A three-neuron reflex includes an interneuron, which is not present in a two-neuron reflex. A two-neuron reflex only includes an afferent neuron and an efferent neuron, while a three-neuron reflex includes an additional interneuron in between.