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    5.

    A unique characteristic of cardiac muscle tissue, NOT found in skeletal or smooth muscle, is:

    A

    Presence of actin and myosin filaments.

    B

    Ability to contract involuntarily.

    C

    Striated appearance under a microscope.

    D

    Intercalated discs with gap junctions enabling synchronized contraction.

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    9.

    Tissue is

    A

    A group of similar cells together with their associated cell intercellular substances which perform a specific function

    B

    A single cell with specified functions

    C

    Composed of a single layer with cube-like cells

    D

    None of the above

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