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

2541 Views

See similar Biology IB tutors

Related Biology IB answers

All answers ▸

Outline the role of insulin and glucagon in the regulation of glucose and outline type 1 and type 2 diabetes.


Please explain patterns of sex linked genetic inhertitance and mention one or more examples of sex linked diseases


Explain that female carriers are heterozygous for X-linked recessive alleles.


What are the key elements of an internal investigation?


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