muscles 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelAQA Created by: pemanCreated on: 08-03-16 17:59 thick protein myosin 1 of 12 thin protein actin 2 of 12 myosin binding to acin is called a cross bridge 3 of 12 what blocks the myosin head binding site tropomyosin 4 of 12 what causes calcium ions to be released nerve impulse 5 of 12 calcium ions bind to troponin 6 of 12 type 2 fast twitch 7 of 12 type 1 slow twitch 8 of 12 end of a sarcomere z line 9 of 12 lighter coloured region i band 10 of 12 contains both myosin and actin h zone 11 of 12 darkest region of muscle a band 12 of 12
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