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Inside a muscle fiber, what triggers sarcomeres to contract?.
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Inside a muscle fiber, what triggers sarcomeres to contract?.

User Joykal Infotech
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2 Answers

12 votes

Answer:

A sudden rise in cystolic Ca2+

User Kacper Lubisz
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9 votes

Answer:

It would be an Impulse.

Step-by-step explanation:

When an impulse reaches the muscle fibres of a motor unit, it stimulates a reaction in each sarcomere between the actin and myosin filaments.

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User Fester
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