Biology / Unit 13 Bio 3131 worked example, 60 to 90 seconds
Tracing a Single Muscle Contraction Cycle, Worked
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The idea
This procedure traces one muscle contraction cycle end to end, from nerve signal through filament sliding to relaxation, drawing together this chapter's neuromuscular and sarcomere atoms.
Where people slip
Treating contraction as a single event rather than a repeating cycle is the error here — each power stroke pulls the filament only a short distance, and sustained shortening requires the whole bind-pull-release sequence to repeat many times over.
Your place on the trail
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Unlocks
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