From Thought to Movement · Muscles
Nerve and muscle never touch — a chemical crosses the gap.
Where the nerve meets the muscle, they don't actually touch. There's a gap — and the command has to be converted into a chemical, released, and caught on the other side.
There's more: nerve and muscle never touch — a chemical crosses the gap. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.
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