Inside a Muscle · Muscles
Each fibre is a single, remarkably long cell.
Pull a muscle apart and it separates into threads. Keep going and each thread separates into finer threads. The finest one you can still call a muscle cell is a muscle fibre — and a single fibre can run the entire length of the muscle.
There's more: each fibre is a single, remarkably long cell. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.
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