Anal sex pelvic bones

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An evolutionary pattern towards bipedalism, taking into account selective pressures of reproduction, has been demonstrated by the increase of critical dimensions of the pelvis as the maternal skeleton becomes larger. What are pelvic floor disorders? You feel as if you need to go frequently, but no matter how hard you try, you get no relief. Registration is free, and takes less than a minute. Relaxation of the internal and external anal sphincters allows the feces to exit from the anus, finally, as the levator ani muscles pull the anus up over the exiting feces.

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In addition to nerve endings, pleasure from anal intercourse may be aided by the close proximity between the anus and the prostate for males, and vaginaclitoral legs and anal area for females.

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Anal sex linked to increased risk of incontinence in both males, females

Muscle spasms in the pelvis. This is because of indirect stimulation of the prostate and vagina or clitoral legs. Medicines, such as low doses of muscle relaxants like diazepam. In females, but not in males, weight and femoral head diameter are excellent predictors of the distance between ischial spines. Waist-to-hip ratio and judgment of attractiveness and healthiness of female figures by male and female physicians. It has been well established that nature has allowed individual anatomical variation and departures from set norms within each sex.

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