Slide #17

• The crossbridge cycle -- pictured here -- is the process of the myosin binding to the actin, going through the Power Stroke, and then disengaging from the Actin.
• The muscle relaxes when Calcium is sequestered in the sarcoplasmic reticulum by Active Transport.
• Rigor Mortis occurs when NO ATP is available to bind myosin and release it from Actin.