Why Does a Skeletal Muscle Fiber Have More Than One

question 68

Multiple Choice

Why does a skeletal muscle fiber have more than one nucleus?

• A) During development, groups of embryonic cells called myoblasts fuse together to form a single muscle fiber.
• B) During development, the nucleus of each myoblast replicates several times.
• C) During development, the sarcolemmae of newly formed muscle fibers disintegrate, making many muscle cells into one.
• D) During muscular activity, parts of each muscle fiber break down, and the remaining parts, including their nuclei, fuse into new combination fibers.
• E) All of the answers are correct.

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