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Sliding Filament Theory Lesson Plan

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by

Katie Tepp

on 22 September 2011

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Transcript of Sliding Filament Theory Lesson Plan

Sliding Filament Theory Lesson Goal Simplify and explain the steps of the sliding filament theory Play sliding filament theory Around the World to assess knowledge Muscles attached to your skeleton Voluntarily controlled; can control when awake Skeletal Muscle Make Up Each muscle is made from many muscle fibers Muscle Fiber=Muscle Cell Muscle fibers are made of many myofibrils One myofibril is made up of many sacromeres Sarcomere Contains thick filaments called myosin and think filaments called actin. When looking through a microscope, the thinner filaments are easier to see since light passes through them easily. Muscle Contraction Myosin has extension heads called myosin heads. Myosin heads grabs onto thin filament when a signal is recieved Heads then use energy to pull the thin filament towards them so that the thick filament is brought to the center Heads release from filament once process is done causing the attached muscle to slide back Causes the shortening and/or muscle contraction. Misc. Muscle Contraction Info Body is composed of thousands of muscle fibers There can never be anything called half contractions Different amount of weight requires the usage of different amounts of muscle fibers Skeletal Muscle
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