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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Levator ani muscle includes all except
assistant
The correct answer is  the levator ani muscle is divisible into a pubococcygeus pa , an iliococcygeus pa and an ischiococcygeus pa. the pubococcygeus pa consists of 3 types of fibres they are anterior fibres, middle fibres (constitute the puborectalis), posterior fibres. Ref : B D Chaurasia's Human Anatomy , seventh edition, volume 2 , pg. no. 460