Sexy belt
Men's foreskin is as sensitive as fingertips and lips.It contains a very rich and diverse specific nerve receptor that is high than any other part of the penis.These special nerve endings can distinguish dynamic and subtle temperature changes and hierarchical sense of tissue structure.
The relationship between foreskin and sexual function
When the penis is erected, the double -layer foreskin can provide the necessary space for the swollen penis and allow the penis skin to slide on the surface of the penis and the head of the penis.The foreskin can slide back and forth freely from the head of the penis to the root, which increases the sufficient stimulation of the foreskin, lace, and penis head, which is conducive to stimulating orgasm.In the process of sexual intercourse, foreskin is conducive to the germ mucosal movement of both men and women.The foreskin can be moved without friction in the vagina, exercise in the sheath of self -lubricating, moving skin.Women can be stressed instead of friction and evoked sexual excitement.After the male puzzle is cut, it lost all of this.
Prevention function
It can also maintain a certain temperature of the penis head, regulate the pH balance and have a cleaning effect.The penile head does not contain sebaceous glands. It relies on the sebum secreted by the foreskin to lubricate and maintain health.
Immunity
The opening of all body organs is the first line of defense of body immune prevention.The gonad of foreskin can secrete anti -bacterial and viral proteins, such as lysic enzymes, which also exist in tears and mothers' milk.Specific epithelial cells, such as Langhan cells, are the composition of the immune system, which is rich in the outer surface of the foreskin.The pulp cells of foreskin mucosa can secrete immunoglobulin, which is a antibody that prevents infection.
Over the years, we have known that Langhan's cells and branch cells have played an important role in the immune system of skin mucosa.In recent years, studies have found that the mucosal immune system has only introduced antigens, that is, allergens of vaginal mucosa to prevent urinary system infection.The foreskin mucosal system with immune activity can also be theoretically used as a way to provide mucosal vaccine.
We already know that Langhan cells can secrete cytokines.Recently, people have discovered that without Langhan cells, scaled epithelial cells can also secrete cytokines and leukocytes to stimulate the immune response of T cells.Cytocytosis released by foreskin mucosa and skin has not yet been carefully studied.Foreign scholar Weiss has not found Langhan cells on the surface of the foreskin of the fetus, but it is easy to confirm on adult foreskin mucosa epithelium.Langhan cells were not found on the surface of the mucous membrane of the foreskin of the newborn, which may be caused by the fusion of the foreskin mucosa in the internal environment of the uterine cavity and the gonad mucosa.It is not until gradually growing, the foreskin can shrink back, and the existence of Langhan cells can be determined when the mucosa and antigen are contacted.
The role of the diversity of bacteria under the foreskin has not been further studied, and the research of the immune function of foreskin is only performed in babies.It is reported that the foreskin cycle has removed the foreskin Langhan cells, which speculates that the danger of HIV infection may be reduced.However, there are disadvantages of this theory. Even if the foreskin is removed, there are still residual penis head mucosa, and the epidermis of the penis still has the existence of Langhan cells.In the United States, it has not prevented the spread of HIV transmission diseases due to the prevalence of foreskin ring.Langhan's cells should be understood as normal mucosal immune cells, not a disease that needs to be removed.
(Editor in charge: A Qiu)
