Myofibrils are bundles of actin and myosin filaments that slide past each other during muscle contraction.
Myofibrils are bundles of thick (myosin) and thin (actin) myofilaments that slide past each other to cause muscle contraction.
Front | Myofibrils |
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Back | bundles of thick and thin myofilaments that move past each other to make muscles contract |
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