The knee-jerk reflex
A) involves a sensory neuron that synapses with a motor neuron in the ventral horn of the spinal cord.
B) can be checked readily by a physician.
C) is a monosynaptic reflex.
D) involves the leg extensor muscle.
E) All of the above

Question

Quizplus · Accepted Answer

All of the above statements are true. The knee-jerk reflex is a monosynaptic reflex that involves a sensory neuron that synapses with a motor neuron in the ventral horn of the spinal cord. The reflex can be checked by a physician and involves the contraction of the leg extensor muscle.

The Knee-Jerk Reflex