The knee-jerk reflex involves which of the following?
A) Sensory and motor neurons
B) Sensory neuron, interneuron, and motor neuron
C) Sensory neuron, motor neuron, and inhibitory interneurons
D) Sensory neuron and interneuron
E) The brain

Question

Quizplus · Accepted Answer

The knee-jerk reflex is a simple reflex that involves sensory neurons detecting the stretch in the muscle and directly communicating with motor neurons that cause the muscle to contract. This reflex does not involve the brain or interneurons, making it a direct pathway from sensory to motor neurons.

The Knee-Jerk Reflex Involves Which of the Following