Skin Subcutaneous tissue Breast Mammary gland.
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This represents the point of transition between the hindgut and the ectoderm in the embryo. The top and bottom of the anus are surrounded by the internal and external anal sphincterstwo muscular rings which control defecation. Skin Subcutaneous tissue Breast Mammary gland. The anus has a relatively high concentration of nerve endings and can be an erogenous zonewhich can make anal intercourse pleasurable if performed properly. It has been, and in some jurisdictions continues to be, a crime carrying severe punishment. Shaving, trimming, depilatory hair removalor Brazilian waxing can clear the perineum of hair.