What happens to the actin and myosin filaments when a muscle contracts?Multiple ChoiceBoth of them shorten.Both of them lengthen.Both stay the same length.Actin shortens, while myosin lengthens.Myosin shortens, while actin lengthens.
Question
What happens to the actin and myosin filaments when a muscle contracts?Multiple ChoiceBoth of them shorten.Both of them lengthen.Both stay the same length.Actin shortens, while myosin lengthens.Myosin shortens, while actin lengthens.
Solution
When a muscle contracts, the actin and myosin filaments slide past each other in a process known as the sliding filament theory. This process does not cause either filament to shorten or lengthen. Instead, the overlapping of the filaments increases, which shortens the muscle as a whole. Therefore, the correct answer is "Both stay the same length."
Similar Questions
Which event does not happen during muscle contraction ?Actin filaments move towards H-zone Decreased length of myosin filament Decreased length of sarcomereLength of A-band remains unchanged.
Which of the following happens as actin and myosin filaments slide past each other during muscle contraction?
During contraction of muscles following do not take place :-(a) Shortening of sarcomere (b) Shortening of A-band(c) Shortening of actin (d) Shortening of myosin
Contraction of muscle fibre takes place by the sliding of :-A Thin filaments over the actin filaments B Thick filaments over the thin filaments C Thin filaments over the thick filaments D Thick filaments over the myosin filaments
What is the name for the linkage that forms between actin and myosin during muscle contraction?
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.