Section II - 14
Neuromuscular Anatomy and Physiology

The motor cortex of the brain sends a message→action potential sent down the axon→ACh attaches to the nicotinic ACh receptors on the motor end plate. ACh from the axon terminal goes to the synaptic cleft→action potential sent down the axon→muscle contraction. ACh attaches to the nicotinic ACh receptors on the motor end plate→action potential sent down the axon→muscle contraction. The motor cortex of the brain sends a message→ACh attaches to the nicotinic ACh receptors on the motor end plate→action potential reaches the presynaptic terminal. None of the above.