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23 January, 10:34

This layer of the heart wall consists mostly of the cardiac muscle and is the thickest and middle layer of the heart wall?

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  1. 23 January, 11:38
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    Answer: Myocardium

    Explanation: I go to college for nursing and already took this class so I know
  2. 23 January, 11:47
    0
    Myocardium

    This layer surrounds and protects the heart.
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