The Sliding Mechanism of Myofilaments Works When

question 163

Multiple Choice

The sliding mechanism of myofilaments works when

• A)the filaments detach from the muscle tendon.
• B)the myosin heads of the thick filaments bind to active sites of the thin filaments.
• C)the myosin heads pivot away from the M line.
• D)the sarcomere relaxes and expands.
• E)actin becomes energized by calcium ions.

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