calcium ions

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7 Terms

1
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1 myosin head

Myosin head cant bind to the binding site which is needed for contraction.

2
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2 blocked binding site by

binding site blocked by tropomyosin.

3
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3 held in place

tropomyosin is held in place by troponin

4
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4 sarc ret

when calcium ion is released by sarcoplasmic reticulum.

5
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5 calc bind

the calcium binds with the troponin

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6 change

troponin shape changes

pulls the tropomyosin out of the way.

7
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7 actin

the myosin head can can then bind with the actin can carry out muscle contraction.