Question

multiple choice question during one of the steps of muscle contraction, atp binds to myosin heads. what happens as a result of that? the myosin heads are released from the actin filaments. the myosin heads bind actin, forming the cross - bridge. the myosin heads are \cocked\ and are now ready to bind actin again. the myosin heads spring from the cocked position, pulling on the thin filaments. need help? review these concept resources. rate your confidence to submit your answer. high medium low reading © 2025 mcgraw hill. all rights reserved. privacy center terms of use

Explanation:

In muscle contraction, when ATP binds to myosin heads, it causes the myosin heads to detach from the actin filaments. This is a key step in the cross - bridge cycle of muscle contraction. The other options describe different steps in the cycle. Binding to form the cross - bridge occurs after the myosin head is 'cocked' and ready to bind actin, and pulling on thin filaments is part of the power stroke phase.

Answer:

The myosin heads are released from the actin filaments.