3 years ago

How is contraction of a skeletal muscle fiber brought about

2 answers:

5 0

When an impulse reaches the muscle fibres of a motor unit, it stimulates a reaction in each sarcomere between the actin and myosin filaments. This reaction results in the start of a contraction and the sliding filament theory.

lubasha [3.4K]3 years ago

4 0

Answer:

Hope this helps! :)

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