A. separates the thorax and the abdomen
B. is a thick layer of muscle
C. is made of epithelial cells
D. is part of the human respiratory apparatus
Correct Answer: Option C
C. is made of epithelial cells
A. separates the thorax and the abdomen
B. is a thick layer of muscle
C. is made of epithelial cells
D. is part of the human respiratory apparatus
Correct Answer: Option C
C. is made of epithelial cells
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