Regarding muscles and movement, what is the concept of the sliding filament mechanism?

Inside the sarcomere, the myosin filament and actin filament slide over eachother making the sarcomere shorter- at rest there is no cross bridge, actin and myosin are apart, ADP + Pi are bound to myosin- Pi is released and a cross bridge happens - cross bridge bends, pulling actin filament past myosin and ADP is released- ATP binds the myosin head and the cross bridge breaks so actin and myosin separate - in the myosin head, ATPase hydrolyses ATP to ADP + Pi so the head bends back to the start positionThe cycle repeats

VT
Answered by Victoria T. Biology tutor

2582 Views

See similar Biology IB tutors

Related Biology IB answers

All answers ▸

Explain how the nerve impulse passes along the neuron


Explain how the properties of water are significant to living organisms.


How does DNA replication occur in eukaryotes?


Describe the process of DNA transcription


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning