PHYSIOLOGY
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The correct order from largest to smallest is ____
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fiber, myofibril, myofilament
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myofilament, fiber, myofibril
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myofilament, myofibril, fiber
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fiber, myofilament, myofilament
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Explanation:
Detailed explanation-1: -from largest to smallest: myofilament, fiber, fascicle, myofibril.
Detailed explanation-2: -Myofibrils are composed of smaller structures called myofilaments.
Detailed explanation-3: -2.1. The smallest contractile unit of skeletal muscle is the muscle fiber or myofiber, which is a long cylindrical cell that contains many nuclei, mitochondria, and sarcomeres (Figure 1) [58]. Each muscle fiber is surrounded by a thin layer of connective tissue called the endomysium.
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