A motor neuron controls the initiation of movement in a hand.An interneuron responsible for inhibiting the hand movement synapses on the motor neuron.If the interneuron receives an excitatory post-synaptic potential,the interneuron will____ causing it to fire,resulting in ____ of the hand.
A)depolarize; movement
B)hyperpolarize; movement
C)hyperpolarize; no movement
D)depolarize; no movement

Question

Quizplus · Accepted Answer

When the interneuron receives an excitatory post-synaptic potential, it will depolarize, causing it to fire. Since this interneuron is responsible for inhibiting hand movement, its activation will result in the inhibition of the motor neuron, leading to no movement of the hand.

A Motor Neuron Controls the Initiation of Movement in a Hand.An