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Which of the following statements about the pelvic diaphragm is INCORRECT?• The coccygeus muscle extends from the ischial spines to the coccyxO The muscles of the pelvic diaphragm resist increases in intra-abdominal pressureO The obturator interns forms the floor of the pelvic diaphragm• The pelvic diaphragm consists of the levator ani and coccyges• The levator ani consists of three separate muscles

Question

Which of the following statements about the pelvic diaphragm is INCORRECT?• The coccygeus muscle extends from the ischial spines to the coccyxO The muscles of the pelvic diaphragm resist increases in intra-abdominal pressureO The obturator interns forms the floor of the pelvic diaphragm• The pelvic diaphragm consists of the levator ani and coccyges• The levator ani consists of three separate muscles

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Solution

The incorrect statement is: "The obturator internus forms the floor of the pelvic diaphragm."

The pelvic diaphragm is primarily formed by the levator ani and the coccygeus muscle. The obturator internus is a muscle in the pelvic wall, not the pelvic diaphragm.

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