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Muscles, part 1 - Muscle Cells: Crash Course A&P #21 John Green, Hank Green, vlogbrothers, Crash Course, crashcourse, Cell (Anatomical Structure), Muscle (Anatomical Structure), Anatomy, Physiology, Anatomy & Physiology, actin, myosin, muscle cells, smooth muscle, cardiac muscle, skeletal muscle, sliding filament model, sarcomeres, myofilaments, calcium, ATP GIF
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Muscles, part 1 - Muscle Cells: Crash Course A&P #21 GIF

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|Source: youtu.be|
Created Mar 27, 2017