Each myosin (thick) filament is a polymerized protein made of monomeric units called:
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Correct answer: Meromyosins
Myosin filaments are composed of many monomeric proteins called meromyosins. Each meromyosin has two important parts: a globular head with a short arm (Heavy Meromyosin) and a tail (Light Meromyosin).
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