Genital standards for 14-year-old boys

Boys of 14 have reached a stage of puberty, at which time they will feel their reproductive organs begin to develop. Usually, we can know whether the boy's reproductive organs are within a normal range through calculations of certain data. In addition, the reproductive organs must be kept clean and hygienic, and viruses must be prevented from invading them as much as possible. Pay attention to cleaning the reproductive organs every day, especially during the development period.

Spermatic cord: The main function is to suspend the testicles and epididymis in the scrotum, protect the testicles and epididymis from damage, and at the same time contract or relax with temperature changes, allowing the testicles to adapt to the external environment, maintaining the best conditions for sperm production and allowing the testicles to have involuntary activity (levator testis).

Ejaculatory duct: Its main function is ejaculation. The wall of the ejaculatory duct is rich in muscle and has strong contraction force to help the ejaculation of semen. At the same time, the opening of the ejaculatory duct on the urethral cliff is small and narrow. This ensures the proper pressure during ejaculation. On the other hand, the semen passes through the narrow opening, which seems to have a "squeezing" feeling. Through the nerve reflex, it triggers the euphoria of ejaculation, thus reaching the orgasm.

Penis: Its main functions are urination, ejaculation and sexual intercourse. It is the main organ of sexual behavior. The skin of the penis is very thin, and there is no fat under the skin. It is mobile and stretchable. The blood sinuses of the corpus cavernosum of the penis can be filled with blood. When there is no sexual impulse, the penis is soft. During sexual stimulation, the blood in the blood sinuses of the corpus cavernosum of the penis increases, and the penis swells, thickens, hardens and becomes erect. When the blood flowing in and the blood flowing back are equal, the penis will continue to be erect.

The head of the penis has abundant nerve endings and is extremely sexually active. When sexual intercourse reaches climax, the penis ejaculates due to the high excitement of the ejaculation center. If the penis cannot erect or is not hard enough under sexual stimulation, sexual intercourse cannot be performed, which is called "impotence". Abnormal penile erection or penile deformity can cause sexual intercourse difficulties.

standard

The length of a penis varies, just like the height, weight, and size of the facial features of different people.

So for the size of male genitals, the International Men's Health Organization (MTD) has come up with the following formula after nearly 30 years of research:

The formula for calculating penis size: Normal penis length M=(body T-105)*0.618/3.14 (cm) Normal penis straight, D=M/3.14 (cm) (Europe and America=Asia/1.414/0.618) cm.