Questions and Answers
What is the plasma membrane of skeletal muscle cells called?
sarcolemma
The degree to which a muscle cell can stretch depends on its:
distensibility
Which of the following wraps and surrounds an individual skeletal muscle fiber?
endomysium
Deep inward extensions of the sarcolemma form a tunnel-like network inside the muscle cell known as:
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Which protein does NOT belong in a thin filament?
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Study Notes
Muscular System: Muscle Structure
- Sarcolemma is the plasma membrane of skeletal muscle cells, derived from "sarco" (flesh) and "lemma" (shell).
- Distensibility defines the capacity of a muscle cell to extend or stretch without damage.
- Endomysium is the connective tissue that encases each individual skeletal muscle fiber, providing support and elasticity.
- Transverse tubules (T-tubules) are deep extensions of the sarcolemma that create a tunnel-like network within the muscle cell, facilitating the transmission of electrical signals.
- Myosin is a thick filament protein and does not belong to the composition of thin filaments in muscle fibers.
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Description
Test your knowledge on skeletal muscle structure with these flashcards. Learn about the sarcolemma, muscle cell distensibility, and the surrounding layers of muscle fibers. Ideal for studying muscular anatomy and physiology.
