Which of the following statements is true about membranes? A. Mucus membranes line cavities that have an external opening in the body. B. Serous membranes line internal cavities that have no external opening in the body. C. When a membrane is attached to an organ it is called a visceral membrane. D. All of the above.
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Which of the following statements is true about membranes? A. Mucus membranes line cavities that hav...
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