During muscle contraction, what could be the correct sequence? A. Release of calcium ions into the sarcoplasm. B. Release of Acetylcholine. C. Sliding of actin filaments over each other. D. Break down of ATP to form a cross bridge.
- AA D B C
- BA B D C
- CB A C D
- DB A D C
✓ Correct answer: D
Want the full step-by-step reasoning?