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Muscles Crossword

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Across
2
When the cell becomes more positive
4
The neurotransmitter that is released by the axon terminal and excites the muscle cell
8
The motor neuron and the muscle cells
9
The end of the nerve cell that releases the neurotransmitter
12
Where the nerve cell and muscle fiber meet
13
The chemical messenger that is released by the axon
14
The ion that enters the axon to signal the release of ACh
15
Thin filament
Down
1
The specialized endoplasmic reticulum in the muscle cells
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AKA responsiveness
5
The electrical impulse that travels down the muscle cell to signal a contraction
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The section that contracts
7
Thick filament
10
The space between the nerve cell and the muscle
11
The ability of the muscle to shorten