Anatomy HW

Anatomy HW
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  • Now you know how muscles contract, isn't that sweet?!
  • The ADP and phosphate releases from the myosin and then a new ATP attaches to the myosin.  This causes the myosin to release and break it into ADP to restart the process over.
  • Myosin binds ADP and phosphate extending into a stretched position.  Myosin then releases it's energy causing the muscle to contract.
  • Myosin
  • Phosphate
  • Actin
  • ADP
  • Myosin requires ATP to provide energy to move.
  • Tropomyosin                 Troponin
  • Myosin
  • Actin
  • ATP
  • Calcium is released from the action potential nerve signals.  The calcium grabs the troponin which also pulls on tropomyosin and pulls it away
  • calcium
  • Troponin      +           Tropomyosin
  • Myosin
  • Actin
  • ATP
  • Myosin can now reach actin and breaks down ATP into ADP and phosphate.
  • Myosin
  • ADP
  • Actin
  • Phosphate
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