PHYSIOLOGY
MUSCLE STRUCTURE FUNCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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thick filaments
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actin
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myosin
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Myosin forms filaments in an antiparallel fashion at the center of the thick filament, while myosin forms filaments in a parallel way in the rest of the thick filament. Consequently, a bipolar thick filament is formed, leaving a central bare zone in the middle.
Detailed explanation-2: -The myofilaments include thick filaments, composed mainly of myosin, and thin filaments composed mainly of actin. The thick and thin filaments cause the cross-striations because of their regular overlap that is kept in register all across the diameter of the muscle fiber.
Detailed explanation-3: -An individual sarcomere contains many parallel actin (thin) and myosin (thick) filaments.
There is 1 question to complete.