Identity one muscle structure and describe the role the structure plays in muscle contraction.

Health

1 answer:

Helen [10]3 years ago

4 0

Answer:

A muscle is made up of fascicles, fibers, myofibrils, sarcomere, and Myofilaments (actin and myosin).

<u>Myofilaments</u>

Actin and myosin play an important role in muscles contraction. The repetitive structure of actin and myosin while hydrolyzing ATP brings a conformational change in shape of protein that exerts force against actin. ADP leads to myosin rigor and then a new ATP unbinds myosin from actin. The combined effect of this repetitive binding and releasing of myosin and actin causes the muscle contraction.

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