The scrotum of a male genital organ surrounds the testicles, which are the place where sperm is produced. In hot summer, the scrotum will relax; When the weather is cold, the scrotum will shrink into a crumpled small ball and tightly cling to the body. This indicates that the scrotum needs an appropriate temperature, and it will self regulate with changes in temperature.
Be cautious when wearing tight jeans
Having abundant sweat glands without subcutaneous fat helps dissipate heat. When the external temperature is low, it stimulates the smooth muscle of the sarcolemma and the cremaster muscle muscle to contract, raising the position of the testis, and the scrotal skin will shrink into dense folds, and retract to the perineum to prevent heat dissipation, which is helpful for heat preservation.
On the contrary, when the external temperature rises, the smooth muscle and cremaster muscle relax, the testis drops, leaves the body, and the scrotal skin relaxes, increasing the heat dissipation area, which is conducive to local heat dissipation.
In addition, the artery in the spermatic cord is wound on a bunch of parallel venous plexus, and the blood in the two vascular systems only flows in the opposite direction through the thin vascular wall, forming a countercurrent exchange system. venous blood constantly takes away the heat from the arterial blood in the abdominal cavity. As a result, the blood temperature of the testicular artery can be 5.2 degrees lower than that of the abdominal aorta. The scrotum regulates the temperature inside the scrotum and testes through these mechanisms.
Don't underestimate the power of the scrotum, it is too important for human reproduction and offspring.
Because temperature has a significant impact on the process of testicular spermatogenesis, the temperature inside the scrotum is about 2 degrees Celsius lower than in the body, making it the optimal temperature for spermatogenesis. If the temperature is too high, the process of spermatogenesis will be hindered or even completely stopped, and the secretion of testosterone will also decrease. If any of the above links malfunctions, it will affect the regulation of scrotal temperature and cause infertility.
Be careful when wearing tight pants
Some young men like to wear tight pants, especially chemical fiber "pocket pants" with poor breathability and heat dissipation, which wrap around the scrotum, keeping it in a closed state and preventing air circulation, causing bacteria to breed and causing inflammation of the reproductive tract; At the same time, it also hinders the heat dissipation and cooling of the scrotal skin, restricts blood circulation, hinders spermatic vein reflux, and is very detrimental to sperm production and nutrition. Over time, it can easily lead to adverse consequences of future infertility.
Although tight pants look good, they are unscientific from a reproductive health perspective. When buying jeans, boys should choose slightly larger, breathable, and cotton quality pants.