Which of the following is the basic contractile unit of the skeletal muscle?

Question

Quizplus · Accepted Answer

The sarcomere is the basic contractile unit of the skeletal muscle made of thin and thick filaments.
The sarcolemma is the cell membrane of the muscle fiber while sarcoplasmic reticulum is the smooth endoplasmic reticulum that stores calcium for muscle contraction.
The Z-disc is the boundary of each sarcomere.
Please see the diagram below as a visual reference for the anatomy and physiology of a muscle fiber referenced in the question above.
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Which of the Following Is the Basic Contractile Unit of the Skeletal