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Myosin heads form cross-bridges with actin filaments during muscle contraction.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle Contraction - Sliding Filament Theory and Regulation
Calcium ions are essential for muscle contraction as they help in cross-bridge formation.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle Contraction - Sliding Filament Theory and Regulation
During contraction, actin filaments slide over myosin filaments, not away from them.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle Contraction - Sliding Filament Theory and Regulation
ATP is required for cross-bridge formation and subsequent muscle contraction.
Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Muscle Contraction - Sliding Filament Theory and Regulation
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