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In humans, the anus (pl.: anuses or ani; from Latin ānus, "ring", "circle") [1] [2] is the external opening of the rectum located inside the intergluteal cleft.Two sphincters control the exit of feces from the body during an act of defecation, which is the primary function of the anus.
Diagram showing anal canal, with dentate line, along which anal crypts open.Anal glands drain into anal crypts via anal ducts. Note also intersphincteric plane where some of these glands are located.
A Mongolian spot, also known as slate grey nevus or congenital dermal melanocytosis, is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients.
The prostate, a.k.a. the "male G-spot," can produce mind-blowing orgasms. Sex experts explain where it is, how to stimulate it, and more.
“When you’re ready, lube up your entrance and finger, spend some time making circles around the opening,” says Sinclair. Then, while breathing, apply some pressure to the opening.
Blackheads (open comedones): Blackheads are small dark brown or black spots, often on the nose and chin. They happen when pores are clogged with sebum and dead skin cells, and are open at the surface.
The Mongolian spot is a congenital developmental condition exclusively involving the skin. The blue colour is caused by melanocytes , melanin -containing cells, that are deep under the skin. [ 6 ] Usually, as multiple spots or one large patch, it covers one or more of the lumbosacral area (lower back ), the buttocks , sides, and shoulders . [ 6 ]
Sexual swellings are concentrations of tumescent tissue, cyclically appearing on the genitalia and adjacent posterior regions of female primates. The exact reproductive purpose of sexual swellings is not fully understood, though the erogenous sensitivity of this tissue is known to motivate females to pursue sexual contact with males. [10]