Why is the scrotum covered with folds?

Why is the scrotum covered with folds? People don't know much about scrotum, especially many strange phenomena dildo machine , which are unbelievable. For example finger vibrator , why is the scrotum covered with folds? Now let's hear what the doctor explained. The spermatogonia cells in the testis produce tens of millions of sperm a day. However, in a warm place in the body dildo fucking , not only cannot the balance of nutrient supply be maintained, but the activity of the reactive enzyme that makes sperm is also destroyed. Therefore, in order to make mature sperm large dildo , it must be maintained at a temperature 4 to 5 ° C lower than the body temperature. The folds of the scrotum just act as a radiator for air-conditioning equipment. The surface area of the scrotum is increased, improving the heat dissipation effect. So doctors remind male friends to be careful of scrotal eczema in summer heat. As the scrotal folds (called flesh membrane) expand and contract, the temperature is adjusted like a radiator. Moreover, the crematus muscle stretches to the maximum extent during severe heat to keep the testicles away from the body as much as possible; conversely, it contracts during severe cold to keep the testicles close to the body to maintain a certain temperature.
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