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Unformatted text preview: have lots of glycogen and myoglobin . Glycogen provides a readily available source of glucose for energy production and myoglobin provides additional oxygen for aerobic respiration. Myofilaments Myofilaments are composed of four major proteins: myosin, actin, troponin and tropomyosin. Myosin and actin are contractile proteins while tropomyosin and troponin are regulatory proteins. These proteins are arranged as shown within the sarcomeres of the myofilaments. Thick Filaments Myosin forms the thick filaments of myofilaments. Myosin proteins are arranged in a bundle with the "heads " directed outward in a spiral array around the bundled "tails". The central area of the thick filament is bare because it consists only of myosin tails....
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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.
- Fall '10