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Myosin strands with their many heads carry more mass, so myosin is called the:

AThreaded filament
BThick filament
CThin filament
DThermal filament
Answer & Solution
Correct answer: B. Thick filament
1. The heads add considerable bulk along the strand. 2. Compared with actin it is the heavier of the two. 3. Myosin is the thick filament. _Source: OpenStax Anatomy and Physiology 2e, Chapter 10, Muscle Tissue._
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