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Muscles Crossword

Across
When the cell becomes more positive
The neurotransmitter that is released by the axon terminal and excites the muscle cell
The motor neuron and the muscle cells
The end of the nerve cell that releases the neurotransmitter
Where the nerve cell and muscle fiber meet
The chemical messenger that is released by the axon
The ion that enters the axon to signal the release of ACh
Thin filament
Down
The specialized endoplasmic reticulum in the muscle cells
AKA responsiveness
The electrical impulse that travels down the muscle cell to signal a contraction
The section that contracts
Thick filament
The space between the nerve cell and the muscle
The ability of the muscle to shorten