Scelta multipla
Which part of the sarcolemma contains acetylcholine receptors?
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9. Muscle Tissue
Structure of a Skeletal Muscle
Scelta multipla
What protein primarily makes up the thick filaments in skeletal muscle fibers?
A
Actin
B
Troponin
C
Myosin
D
Tropomyosin
Guida verificata passo dopo passo1
Begin by understanding the structure of skeletal muscle fibers, which are composed of repeating units called sarcomeres.
Recognize that sarcomeres contain two types of filaments: thick and thin filaments.
Identify the proteins that make up these filaments. Thin filaments are primarily composed of actin, along with regulatory proteins like troponin and tropomyosin.
Focus on the thick filaments, which are primarily composed of the protein myosin. Myosin molecules have heads that interact with actin during muscle contraction.
Conclude that myosin is the protein that primarily makes up the thick filaments in skeletal muscle fibers, playing a crucial role in muscle contraction.
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