Select the two types of myofilaments that make up the myofibrils of a skeletal muscle fiber.Multiple select question.ShortThinLongNarrowThick
Question
Select the two types of myofilaments that make up the myofibrils of a skeletal muscle fiber.
Multiple select question.
- Short
- Thin
- Long
- Narrow
- Thick
Solution
To answer your question about the types of myofilaments that make up the myofibrils of a skeletal muscle fiber, we need to identify the primary types involved in muscle contraction.
-
Thin Myofilaments: These are primarily made up of the protein actin, along with tropomyosin and troponin. Thin filaments play a crucial role in muscle contraction by interacting with thick filaments.
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Thick Myofilaments: These consist largely of the protein myosin. Thick filaments interact with the thin filaments to facilitate muscle contraction through the sliding filament mechanism.
Final Answer:
The two types of myofilaments that make up the myofibrils of a skeletal muscle fiber are Thin and Thick myofilaments.
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