Which of the following statements about the knee-jerk reflex is false?
A) It is a monosynaptic reflex.
B) It causes the leg extensor muscle to contract.
C) Chemoreceptors sense a physician's hammer tap.
D) The afferent nerve travels from the receptor to the spinal cord.
E) The motor neuron leaves via a ventral root of the spinal cord.

Question

Quizplus · Accepted Answer

Chemoreceptors are not involved in the knee-jerk reflex. The reflex is a monosynaptic reflex that causes the leg extensor muscle to contract. The afferent nerve travels from the receptor to the spinal cord, and the motor neuron leaves via a ventral root of the spinal cord.

Which of the Following Statements About the Knee-Jerk Reflex Is