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  5. Muscle fiber contraction and

6.3 Muscle fiber contraction and relaxation  (Page 10/22)

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10 / 22  During muscle contraction, the cross-bridge detaches when ________.
A  the myosin head binds to an ADP molecule
B  the myosin head binds to an ATP molecule
C  calcium ions bind to troponin
D  calcium ions bind to actin
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Practice MCQ 6 FlashCards 3 Key Terms 8

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Source:  OpenStax, Anatomy & Physiology: support and movement. OpenStax CNX. Aug 21, 2014 Download for free at https://legacy.cnx.org/content/col11700/1.1
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