Place the events at the neuromuscular junction in the order…

Place the events at the neuromuscular junction in the order in which they occur: 1. Release of acetylcholine from an axon end bulb 2. Binding of acetylcholine to its receptors on motor endplate 3. Arrival of an action potential at the synaptic end bulb 4. Diffusion of acetylcholine across the synaptic cleft 5. Opening of sodium channels in the motor endplate 6. Production of muscle fiber action potential