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Start studying focus figure 9.3 How is it connected to, or related to excitation, contraction coupling Learn vocabulary, terms, and more with flashcards, games, and other study tools.

This diagram represents the sequence of events that occurs when a motor neuron stimulates a muscle fiber to contract What is the cross bridge cycle When myosin heads bind to actin they use chemical energy from the breakdown of atp to generate a pulling force against actin filaments, then detach and prepare to bind again

This cycle involves a series of steps where myosin heads bind to actin, pull, and then release, generating force and enabling muscle shortening.

B atp is hydrolyzed to adp and a phosphate allowing the myosin head to move towards. This action generates the force required for muscle contraction.

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