What refers to one neuron and all skeletal muscle cells it stimulates?

A motor unit refers to one neuron (motor neuron) and all skeletal muscle cells that it stimulates. The motor neuron sends signals from the central nervous system to the muscle fibers, causing them to contract. The number of muscle fibers innervated by a single motor neuron varies depending on the muscle and its function. Motor units are essential for controlling movement and maintaining posture.