Refer to the figure showing various stages of a contraction cycle in a sarcomere. 
What has happened between panels A and B that has allowed myosin to attach to actin?
Definitions:
Self-Awareness
The conscious knowledge of one's own character, feelings, motives, and desires.
Personal Vision Statement
A self-guided declaration of an individual's goals, values, and desired direction in life.
Emotional Intelligence
The ability to recognize, understand, and manage one's own emotions and the emotions of others.
Components
Components refer to the individual parts or elements that make up a larger system, machine, or device, each contributing to the system's overall function.
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