Neither actin nor myosin filaments shorten during muscle contraction. Instead, they slide past each other, leading to a shortening of the muscle fiber as a whole. Therefore, the correct answer is:
Neither actin nor myosin filaments shorten.
Which of the following happens as actin and myosin filaments slide past each other during muscle contraction?
Multiple Choice
Both actin and myosin filaments shorten.
Actin filaments shorten, while myosin filaments do not.
Either actin or myosin filaments shorten, but not both at the same time.
Myosin filaments shorten, while actin filaments do not.
Neither actin nor myosin filaments shorten.
1 answer