Fig. 3. Anatomy of the pelvic floor muscles. (A) The funnel-shaped pelvic floor with the sphincter complex after removal of the sacrum. Adapted from Lee et al. Ann Coloproctol 2018;34(2):59–71.²⁴ (B) Gradual coning down of the pelvic floor with a wide angle usually seen in women. (C) Steep coning down of the pelvic floor with a narrow angle usually seen in men. (D) The mesorectum tapered out 2 or 3 cm proximally from the pelvic floor.