At the NMJ, the axon terminal releases ACh. The motor end-plate is the location of the ACh-receptors in the muscle fiber sarcolemma. When ACh molecules are released, they diffuse across a minute space called the synaptic cleft and bind to the receptors.
Cut Rita Zahara
“Motor End-Plate and Innervation ,” Open Educational Resource (OER) - UNM, accessed February 25, 2020, http://oer.unm.ac.id/items/show/1123.