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| Description: Note the changes in the I band and H zone as the muscle contracts The Sliding Filament Mechanism Myosin pulls on actin, causing the thin filament to slide inward Consequently, Z discs move toward each other and the sarcomere shortens Thanks to the structural proteins, there is a transmission of force throughout the entire muscle, resulting in whole muscle contraction Picture Stats: Views: 513 Filesize: 722.32kB Height: 696 Width: 996 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=40434 |