What decreases in length during the contraction of a skeletal muscle fiber?
An action potential from a motor neuron triggers the release of acetylcholine into the motor end plate
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Muscle Innervation This browser cannot play the embedded video file. 2. Actin and Myosin Cross-Bridge Formation
The Role of Calcium in Cross-Bridge Formation Understanding: • The contraction of the skeletal muscle is achieved by the sliding of actin and myosin filaments • ATP hydrolysis and cross bridge formation are necessary for the filaments to slide
Sliding Filaments Mechanism This browser cannot play the embedded video file. 4. Sarcomere Shortening
Diagrams of Sarcomere Shortening Summary of Muscle Contractions
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