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vadim44 vadim44
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6 years ago
Which of the following events occurs first?
A) Myosin cross-bridges attach to actin.
B) Calcium ions are released from the sarcoplasmic reticulum.
C) Calcium binds to troponin.
D) The myosin head pivots toward the M line.
E) The myosin head binds ATP and detaches from actin.
Textbook 
Human Anatomy

Human Anatomy


Edition: 9th
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6 years ago
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