How Muscles Contract
11th GradeScience45 min
Learning Objective
I can describe the steps involved in muscle contraction.
Lesson Flow
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Guided Notes
Key concepts students will learn:
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Muscle contraction occurs when actin and myosin filaments slide past each other, shortening the sarcomere.
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Muscle contraction begins when a nerve impulse stimulates muscle fibers, releasing calcium ions which bind to troponin.
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The binding of ATP severs the bonds between myosin and actin, and the energy released is stored in the myosin heads.
Practice
11 questions • Multiple choice & Short answer
Exit Ticket
“Describe the steps involved in muscle contraction, starting from the nerve impulse and calcium ion release to the start of a new actin binding sequence.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
