anus
The external opening of the rectum.
overview
It is the terminal part of the digestive tract, and its role is to defecate the food residue after digestion and absorption of nutrients and the waste products of the digestive tract itself.
There is an anal sphincter around it, which is controlled by it.
It can be said to be one of the key points because it is a part that easily touches the mucous membrane such as the mouth and nose.
By the way, the nerve is only around the mouth of the anus.
For women, the distance between the anus and the female genitalia is close.
Therefore, urine may reach the anus for a while.
Also, since the anus and female genitalia use the same muscles and nerves, stool may be excreted when a child is born.
In addition, rectal vaginal fistula may occur, and stool that usually comes out of the anus flows toward the vagina. As a treatment method, a temporary artificial anus is used and surgery to repair the rectum and vagina is required. (Of course, the original anus remains.)
Also, the female anus tends to be rounder.
In addition, the distance between the anus and the genitals (the perineum) differs depending on the amount of male and female hormones exposed to the fetus in both men and women, and the closer the child is to the genitals, the closer the child is exposed to female hormones.
Anus as a sexual nuance
Often called anal.
As mentioned above, the purpose is basically to discharge waste products from the body, but there are also people who have a preference for using the anus for masturbation and sexual intercourse.
It is said that the reason why the anus feels pleasant is that there is a neural circuit that promotes defecation by regarding the stimulation from the anus as a pleasant sensation during excretion in infancy.
Since this nerve remains even after adulthood, the nerve is reactivated after training, and the stimulation to the anus is regarded as a pleasure. In addition, since the nerves are close to the genitals, by giving stimulation to the genitals in parallel, the anal stimulation becomes clearer and more sexual.
important point
However, since the anus is basically regarded as an unclean place, it is quite possible that some people may feel disgusted with sexual intercourse using the anus (anal sex) or masturbation using the anus (anal masturbation).
Especially if you are going to play with your anus, such as your partner, you will need mutual consent.
Also, if you are not careful when doing anal sex, please be careful because there is a risk of damaging the anal sphincter and infectious diseases caused by intestinal bacteria.
In particular, the risk of developing a sexually transmitted disease is several times higher than in the vagina, so even if you try to clean the inside of the rectum before sexual intercourse, it is only a burning blade, so be sure to use a condom. Most of the bacteria are harmless, but some of them emit toxins when they come in contact with the air, so don't think about tasting raw anal easily.
And once the anal sphincter is cut, it cannot be recovered, so never try to force it open. At worst, don't forget that there is a danger of forcing the other party to live with an artificial anus !!
Especially for women, if you have an artificial anus at the appropriate age for childbirth, it will adversely affect childbirth, so be careful !!
Because gay men inevitably have this when they have sexual intercourse, they are very susceptible to venereal diseases, especially the recipient's venereal infection rate.
Therefore, women need to be vigilant against gay men (as you can see from the high rates of gay AIDS and syphilis infections).
If you want to take care of a woman's anus, stop anal sex.
Sex isn't all about inserting ...
By the way, since the anus of a woman is not a genital organ, it is difficult for it to be the target of mosaic, and many men and women are pleased to enjoy the movement of scatology and holes in the buttocks.
Therefore, you can see enema play and play tongue and kiss on the buttocks without having anal sex.
Even in pixiv's illustrations, the basics are often not mosaicked.
Related tags
See also
- x anus, for the cartoonish version
- Tag Group:Ass
- Tag Group:Body parts
The following tags are aliased to this tag: ass_hole and asshole (learn more).
The following tags implicate this tag: spread_anus (learn more).
