NEET Biology Structural Organisation In Animals Question Bank Muscular Tissue

  • question_answer
    During muscle contraction [MH-CET 2003; Kerala CET 2005]

    A) Size of ?A? bands remain the same

    B) Size of ?H? zone becomes smaller

    C) Size of ?I? band decreases

    D) Diameter of fibre increases

    Correct Answer: A

    Solution :

    During muscle contraction, both I-band and H-zone progressively shorten and eventually diappear while length of A-band remains constant.


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