When do little boys develop

Every child needs to go through puberty, and in this special stage of puberty, which is the standard for the transition from childhood to maturity, the age range of puberty should be between 10 and 20 years old. During these ten years, the body is changing little by little and will be affected by many factors such as race, gender, and living environment, which will affect development. Therefore, whether it is a boy or a girl, you must pay attention during this period.

Every boy can only become a mature man after going through the special stage of puberty. The age range of puberty is roughly between 10 and 20 years old. However, for each child, the time when puberty begins and maturity varies greatly from person to person, and is affected by many factors such as race, gender, and living environment.

Generally speaking, boys enter puberty two years later than girls on average. During this period, every child will undergo significant changes in body size, shape, physiological functions, and psychological behavior. Among them, the development and maturity of the reproductive system are particularly noteworthy. Therefore, adolescence is a transitional period from children to adults, and it is a critical period that determines a person's development level throughout his life.

Why is the development of the reproductive system the most prominent? It turns out that in the process of human growth and development, the development of various systems of the human body occurs early or late, fast or slow. During the period from birth to the age of 10, the changes in the reproductive system are very small and almost "stand still" compared to other organs that grow more rapidly.

However, once puberty begins, the reproductive system develops extremely rapidly and unstoppably, leaving all other organs in the body far behind.

What changes do boys experience during sexual development?

1. Development of male reproductive organs

The male reproductive organs include the external genitalia penis, scrotum and the internal genitalia testicles, epididymis, seminal vesicles, prostate, etc.

The penis is the male sexual organ. Before puberty, it generally does not exceed 5 cm. It grows faster between the ages of 12 and 13, and can grow to about 12 cm by the end of puberty. Even among mature men who have completed puberty, there can be huge differences, just like some people are taller than others, but this generally does not affect their function. The front end of the penis is the glans, which is the most sensitive part because it is covered with nerve fibers.

The glans penis of infants and young children is covered with a layer of skin called "foreskin". After puberty accelerates or when approaching maturity, the foreskin will gradually retract to expose the glans penis. However, many people still have long foreskins when they reach adulthood. In this case, as long as you pay attention to hygiene regularly, turn up the foreskin for cleaning, and prevent dirt from accumulating inside, it will not affect your health or sexual function.

The testicles are the most important internal reproductive organs of men. They are oval in shape, a pair, and are found in the male's scrotum. The main functions of the testicles are two-fold: producing sperm and secreting male hormones, the latter of which can directly affect the development of male reproductive organs and the appearance of secondary sexual characteristics. During the fetal period, the testicles are in the human abdominal cavity and only descend into the scrotum after birth. Some boys do not have testicles in their scrotum, or only have testicles on one side, which means that the testicles are still in the abdominal cavity and have not descended. This is "cryptorchidism" and patients should undergo surgical treatment as soon as possible before the age of two or three.

In the medical field, testicle size is often expressed in terms of volume. Before the age of 10, it does not exceed 3 ml and its diameter is less than 2 cm. The volume increases significantly after the age of 10. According to surveys, the average volume at the age of 11 is 4.19 ml, 6.11 ml at the age of 12, 9.34 ml at the age of 13, 11.48 ml at the age of 14, 13.50 ml at the age of 15, 15.55 ml at the age of 16, 16.66 ml at the age of 17, 17.49 ml at the age of 18, and it increases to about 18 ml at the age of 19-20, and the diameter will reach 4 cm.

The above data is just an average value. In fact, the growth rate of testicle size is also related to the person's maturity type. For example, the testicles of a 14-year-old child with early development can be larger than those of a 16- or 17-year-old late-maturing child. This is a common and normal phenomenon.

How can you tell whether you are normal, precocious or late in puberty? The simplest way to judge is to make an inference based on the changes in your own height. Because every child has a period of particularly rapid height growth during puberty, which is called the "peak height growth rate". If you can record your height growth every year during adolescence, the year in which you grow the fastest will be the age at which your growth rate peaks. Generally, precocious boys may experience their growth spurt at around 12 to 13 years old, with the normal peak being around 14 to 15 years old, while late maturing boys may experience their growth spurt as late as around 16 to 17 years old. The development of reproductive organs such as the testicles is basically consistent with the changes in height during puberty.

As the testicles grow larger, their structure and function change accordingly. Boys can produce adult-like sperm around the age of 18. The liquid formed by the mixture of sperm and mucus secreted by the prostate, seminal vesicles, and bulbourethral glands is called semen. After semen is stored in the body for a certain period of time and in a certain amount, if it is not absorbed by the body, it will be discharged from the body. This process is called "nocturnal emission". The first time it occurs is also called "first nocturnal emission".

According to a survey, the average age of first nocturnal emission is around 16 years old, and the earliest occurs at 11 to 12 years old, but these semens may not contain mature sperm. After the first nocturnal emission, nocturnal emissions will occur again every ten days to half a month. These are all normal physiological phenomena.