please help me put muscle contractions in order

Question

ATP is broken down (hydrolysis) and the muscle contracts

Brain sends an electrical signal to the spinal cord

Calcium is released in the muscle and cross bridges form

Electrical signal arrives at motor neuron

An electrical signal is generated in the muscle

A neurotransmitter (acetylcholine) is released into the synaptic cleft

Answer 1

1. Brain sends an electrical signal to the spinal cord
2. Electrical signal arrives at motor neuron
3. A neurotransmitter (acetylcholine) is released into the synaptic cleft
4. An electrical signal is generated in the muscle
5. Calcium is released in the muscle and cross bridges form
6. ATP is broken down (hydrolysis) and the muscle contracts

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