sliding filament theory steps Calcium ions are released during depolarization. development of the actin-myosin cross-bridge. Actin and myosin filament sliding mechanism. Sarcomere truncation.
Calcium ions: The sarcoplasmic reticulum in the actin filament releases calcium ions. Myosin head is immobile. Cross bridge Act filament and myosin head create cross bridges (bonds) when calcium ions are present. Myosin head slides : Myosin head slides in the direction of the actin filament because to ATPas generated by the myosin head filament. skeletal muscle contraction has taken place. The actin filament can glide past the shortening myosin thanks to the contraction brought on by ATP release. Cross bridge: The myosin head is severed from the actin filament by too much ATP. Troponin : Actin is returned to its initial location by troponin. ATP is converted by ATPase back to ADP. Myosin.
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