In muscles, cross bridging is greatly required for contraction. This process of contraction needs ATP molecules for energy. During contraction, the myosin filaments alter their shape and pull actin filaments toward the centre of the sarcomere. Muscle contraction is required for heat production, standing posture, sitting posture, and joint stability.

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Chapter 12, Problem 12UYK

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Introduction: In muscles, cross bridging is greatly required for contraction. This process of contraction needs ATP molecules for energy. During contraction, the myosin filaments alter their shape and pull actin filaments toward the centre of the sarcomere. Muscle contraction is required for heat production, standing posture, sitting posture, and joint stability.

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