Which muscle is innervated by the ulnar nerve? select from letters a-d?

The ulnar nerves innervate muscles in the frontal part of the forearm, and in the hand. In the anterior forearm, the well-developed branch of ulnar nerve provisions two muscles: Flexor carpi ulnaris which stretches and abducts the hand at the wrist; and Flexor digitorum profundus which stretches the fingers.

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explanation:

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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