Why is the scrotum moist?

　　Moisture in the scrotum can protect men’s fertility

　　Moisture in the scrotum is actually male A common physiological phenomenon is not disease。

　　Moisture in the scrotum is an important part of ensuring male fertility. Men’s fertility “messengers”” sperm , produced by two testicles growing in the scrotum, and the production of sperm by the testicles depends on temperature conditions. When the body temperature is 37℃, the optimal temperature for sperm production in the testicles is 35℃℃ ； If the temperature is too high, the spermatogenesis function will be hindered or even completely stopped. So the scrotum reaches this "low temperature" through the following methods:

　　①skin There are abundant blood vessels in the scrotum, which can quickly take away excess heat from the scrotum.；

　　②There are many wrinkles on the skin, which increases the surface area of ​​the skin, which also increases the surface area for sweating and heat dissipation.；

　　③The scrotum hangs outside the body's internal organs. This position reduces the influence of the body's internal organs' temperature.；

　　④The skin is very thin and has abundant sweat glands. If the surrounding environment or the internal temperature of the body rises slightly, the scrotal skin will sweat and dissipate heat.；

　　⑤There is a thin layer of muscles under the scrotal skin, which is very sensitive to changes in temperature. When the temperature in the scrotum rises, it relaxes, allowing the surface area of ​​the scrotal skin to expand, making it easier to sweat and dissipate heat. On the contrary, when the temperature in the scrotum drops, it contracts, reducing the surface area of ​​the scrotal skin and reducing sweating and heat dissipation.