What is the sequence of events for muscle contraction?

·      The myosin head attaches to the myosin binding site on the actin filament forming an actinomyosin bridge·      ATP is hydrolysed to ADP and inorganic phosphate as the cross-bridge forms (ATP hydrolase is activated by calcium ions so that ATP is hydrolysed)·      The myosin head tilts in a rowing action, sliding the actin filament over the myosin filament, toward the centre of the sarcomere·      Energy from the hydrolysis of ATP causes the myosin head to release the actin filament·      The myosin head flips back into its original position and the cycle is repeated as another actinomyosin bridge is formed.

LB
Answered by Letisha B. Biology tutor

34632 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How does a chemical synapse transmit an action potential?


Effect of enzyme concentration in excess substrate on enzyme catalysed reaction


Describe the process of PCR, including what is needed.


Describe the way in which the normal heart beat is initiated and controlled


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences