The Sliding Filament Model 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelOCR Created by: jodie_lncstrCreated on: 14-01-16 17:50 Smallest contractile unit of a muscle Sarcomere 1 of 16 Marks the end and beginning of the sarcomere Z line 2 of 16 Thin filament Actin 3 of 16 Thick filament Myosin 4 of 16 Rod-shaped protein Tropomyosin 5 of 16 Myosin head attatches to surroudning actin filaments forming... Crossbridge 6 of 16 Head group bends back, causing thin filament to be pulled along and overlap with thick filament Power stroke 7 of 16 Pi is known as... Inorganic phosphate 8 of 16 Does not change in length during contraction A band 9 of 16 Crossbridge breaks when this attaches to myosin head ATP 10 of 16 Created by hydrolysis of ATP ADP and Pi 11 of 16 This is released when an action potential arrives Calcium Ions 12 of 16 Calcium ions are released from this Sarcoplasmic reticulum 13 of 16 Maintenance of ATP involving mitochondria Aerobic 14 of 16 Maintenance of ATP supply that produces lactic acid Anaerobic 15 of 16 Phosphate group from this is used to maintain ATP supply Creatine Phosphate 16 of 16
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