The point where the axon's motor end plates meet the muscle fibre is called the .............. ..........

There is a small gap between the motor end plated and muscle fibre called the .......... ........

An action potential cannot cross the synaptic cleft without a .................

Neurotransmitter called ............. is secreted into the synaptic cleft to conduct the nerve impulse across the gap

If the electrical charge is above a ............ the muscle fibre will contract

Depending on whether the stimulus is above a threshold, all muscle fibres will give a complete contraction or no contraction at all

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