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Question 13153
NEET Biology · Hard

Locomotion and Movement: Sarcomere Bands MCQ

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Sarcomere BandsHardQuestion 13153

Question

During skeletal muscle contraction, which change is expected?

  1. A
    I band shortens while A band remains constant
    Correct
  2. B
    A band disappears completely
  3. C
    Z lines move farther apart
  4. D
    Thin filaments become shorter

Correct answer

I band shortens while A band remains constant

Explanation

Sliding filament theory predicts increased overlap without shortening the thick or thin filaments.

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