During limb movement, one muscle of a pair contracts while the antagonistic muscle relaxes.The interneuron that inhibits firing in the motor neuron for the antagonistic muscle is located in the _______ of the _______.
A) dorsal root; spinal nerve
B) gray matter; brain
C) white matter; spinal cord
D) ventral root; spinal cord
E) gray matter; spinal cord

Question

Quizplus · Accepted Answer

The interneuron that inhibits firing in the motor neuron for the antagonistic muscle is located in the gray matter of the spinal cord. This is because the spinal cord is responsible for processing sensory information and generating motor output, and the gray matter contains the cell bodies of interneurons and motor neurons. The dorsal root carries sensory information into the spinal cord, while the ventral root carries motor output out of the spinal cord. The white matter of the spinal cord contains axons that connect different regions of the spinal cord and relay information up and down the spinal cord to the brain.

During Limb Movement, One Muscle of a Pair Contracts While