sliding filaments theory
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Last updated 3:39 AM on 10/20/25
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8 Terms
1
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Step 1
Signals from neurons reach the muscle (cell/fiber)
2
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Step 2
Neurotransmitters (AcH(acetylcholine)) is released from neuron & stimulates muscle activity
3
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Step 3
Action potential is initiated
4
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Step 4
Ca+ (calcium ions) are released from sarcoplasmic reticulum
5
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Step 5
Ca+ attatches to troponin on the actin (& moves tropomyosin because it blocks myosin from attatching to actin)
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Step 6
ATP attaches to myosin & lifts myosin heads to attach
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Step 7
Myosin attaches to actin & pulls actin towards the m-line
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Step 8
Repolorization occurs to allow for relaxation of the muscle
Note 
Flashcards (35)