MCAT Question of the Day
    •

    Q:

    		 Which of the following occurs during muscle contractions?
    		 

    A

    		 The M-line disappears

    B

    		 The H and I bands decrease in size

    C

    		 The A band decreases in size

    D

    		 The Z-discs separate from the actin thin filaments



    Musculoskeletal System |
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