The junction between a motor neuron and a muscle cell is called a
Neuromuscular junction can be defined as a synapse the motor neuron and the muscle fiber. Actually the synapse occurs between the âsynaptic end bulbsâ of the motor neuron and âmotor end plate â of muscle fiber.The motor end plate is in fact the highly excitable region of muscle fiber plasma membrane and it is responsible for initiating action potentials across the muscle surface.ynaptic cleft is the space between the motor end plate (muscle fiber part) and synaptic end bulb (motor neuron part) of the neuromuscular junction. It is 20 to 30 nanometers wide.