Many men and women ask questions to ask similar questions. To answer similar questions, first of all, it is necessary to clarify how the penis is abnormal. Secondly, it is necessary to understand whether the development is abnormal, or the individual differences in the normal range.In, if the penis is slightly smaller, will they affect normal sexual life, that is, there are many differences that the wife can get the touching penis and the height, fat and thin, and the size of the facial features.together.
Domestic experts have determined that 1412 penis size of Chinese healthy men and the length of the penis of 126 healthy men.The results show that the normal period is 14.5 cm, the shortest is 4 cm, and the average is 8.375 cm; the maximum perimeter is 12 cm, the minimum is 4.5 cm, and the average is 8.3 cm.The erection is up to 16 cm, the shortest is 9 cm, and the average is 12 cm; the perimeter length is 14 cm, the minimum is 8 cm, and the average is 10.75 cm.The length of 1,000 normal adult men surveyed by experts such as experts is: 4.9-8.6 cm in length, an average of 6.55 cm, a maximum length of 10.6 cm, and a shortest 3.7 cm.Experts, etc., measured the penis of a 16-40-year-old male college student at 2547 cases. The average length was 7.43 cm, and the average diameter was 8.17 cm.Long can represent the length after erection.It can be seen that the measurement results of different authors are also different, and the results are also affected by regions and nations.
In addition, the length of the penis of the same person under normal state is not constant, such as tension, cold or severe fatigue, the penis can be shortened.Coupled with the measurement method itself is large, it is difficult to judge whether the penis is normal in length.Therefore, the above numbers can only be used as a reference. Do not keep your length of your length.Clinicians are also unwilling to judge whether it is normal with the length of the penis.As long as it can be sexual sex, it is normal to complete the task of childbirth and childcare.Otherwise, this family has long been eliminated.
In order to further explain the cause of the large or small penis, let us review the occurrence and development of the penis together.For the convenience of narrative, we divide it into four stages:
(1) In the 10-12 weeks of pregnancy, the penis has just been differentiated, only 3.5 mm long. At this time, the testosterone produced by the HCG secreted by the placenta.
(2) In the middle and 6 months of pregnancy, the penis grows rapidly, and it has reached 2.5-3.5 cm at the time of birth.
(3) After birth to before adolescence (around 7 years old), the penis grows slowly. This is because the hypothalamus and pituitary development are slow, and the level of testosterone levels is also low.
(4) After the beginning of the adolescence, the secretion of pituitary and testicular hormones is strong, and the penis grows rapidly. In just 5 years, it reaches the level of adults and increases thickening.When the level of senile hormones is significantly reduced or surgery is trending, the penis can be secondary degraded.After many years of discontinuation of secondary discontinuation, pathological degeneration may also be caused. This is not the general problem of using waste and degeneration, but the consequences of degenerative changes in smooth muscle fibers.
In short, the division and development of the penis depend on the testosterone level in the body. If the testosterone secretion is insufficient during the 6-9 months of pregnancy, the penis development is lower than the normal rate, and the penis is smaller at birth.那么，怎样才算是真正的呢阴茎在青春期前短于2.5厘米，青春期后短于5厘米，而且发育不正常，没有勃起功能;特别是第二性征发育不良，，无生育力，无精子，At this time, Fang can think that the penile development is abnormal.The cause of the real small penis includes:
(1) Highly promoting gonadotropic gonad function that is originally involved in testicular gonads. At this time, the brain and pituitary gland are normal and can issue strong instructions.(2) Low -proliferative gonadotrophic gonad functional dysfunction is because the hypothalamus and pituitary lesions cannot be issued downward.(3) Partial anti -androgen syndrome, that is, the penis is not sensitive to therogens, the testosterone level in the patient's body is normal, but the second sexual characteristics are abnormal, and there may even be urethral cracking.(4) The special small penis is unknown.
(Editor in charge: Chen Bong)
