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what does myosin do during a muscle contraction?

firechoker

wrote...

Posts: 69

Rep:

11 years ago

what does myosin do during a muscle contraction?

what does myosin do during a muscle contraction?

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2 Replies

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smnam

wrote...

#1

11 years ago

It pulls on the actin filaments closer to the M-Line (this is visible during the contraction of a muscle fibre; a sarcomere will shorten and the actins will be closer to each other)

micro

wrote...

#2

11 years ago

The myosin heads will attach to binding sites on actin, and using one ATP, the myosin neck flexes, which pulls actin closer to the middle of the sarcomere, therefore shortening the sarcomere as well as the entire muscle.

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