The main characteristics of adolescent male and female sexual development

Now, it is recommended that schools should provide detailed physical hygiene education for young boys and girls, so that young boys and girls can learn more about physical hygiene knowledge and ensure that children have no defects in their education. This is also part of the content that students need to learn, so let the experts introduce us to some important characteristics of sexual development in adolescent boys and girls.

Sexual development includes the development of gonads, sexual organs, secondary sexual characteristics and the acquisition of sexual function. The so-called primary sexual characteristics are those that can be seen after birth (such as external genitalia) and internal reproductive organs that are not visible (such as the uterus); secondary sexual characteristics are the physical characteristics of men and women that appear during puberty (such as men growing beards and women developing breasts). Secondary sexual characteristics are also called "secondary sexual characteristics" or "secondary sexual characteristics."

The development of secondary sexual characteristics in boys is manifested in the voice becoming louder and deeper, the appearance of a Adam's apple in the middle of the neck, the growth of a beard on the face, and the growth of armpit hair and pubic hair on the body. In addition, the bones become thicker, the muscles develop, the body becomes more sturdy, and the appearance of a male adult is gradually formed. Boys also have their first nocturnal emission at the age of 14 to 16. The sexual organs also develop rapidly to near adult levels.

During puberty, a girl's pelvis gradually widens, her breasts begin to develop, subcutaneous fat increases, her voice becomes higher-pitched, and pubic and axillary hair appear. In addition to these secondary sexual characteristics, girls begin to menstruate around age 13. The first menstrual period is called menarche. Due to these changes, girls have fuller breasts, rounder hips, and a relatively thin waist, which are unique to women. It should be noted that menarche is one of the important signs of sexual maturity in adolescence, but it does not mean that female sexual function has fully matured.

Nutrition is the material basis of sexual development

Menarche is one of the important signs of sexual maturity in adolescence. Over the past century, the age at which women begin menstruation has tended to gradually increase. From 1860 to 1960, the average age of menarche for women in Western European countries advanced by four months every decade. In my country, data from Beijing, Shanghai and other places also show that the age of menarche for women is also tending to increase. In 1962, the age of menarche for women in Beijing was 14.16 years old, and in 1991 it was 12.50 years old. From 1962 to 1991, the age of menarche increased by 1.66 years. The increase in the age of menarche is influenced by many factors, but it is closely related to the improvement of nutritional conditions. Nutrition plays an important role in adolescent development. Nutritional deficiencies directly affect sexual development, or delay sexual development, or even cause developmental disorders. Therefore, adolescent boys and girls during puberty should pay attention to calorie supplementation and provide rich nutrients to ensure the growth and development needs of adolescents. Pay special attention to moderate fat intake. Because fat has a certain relationship with the sexual development of adolescents.

Expert research has confirmed that girls will begin to menstruate when the amount of body fat reaches a certain level. Girls who are severely malnourished before and after puberty, accompanied by extreme weight loss, or who are severely malnourished due to dieting for fear of gaining weight, are prone to delayed menstruation, amenorrhea and other diseases, which affect their normal physical development.

Children should store some nutrients in the early stages of puberty (2 to 3 years before girls' menarche) to ensure puberty development. The habit of being picky and partial in eating should be corrected, especially for some girls who are afraid of getting fat and go on a diet, which leads to insufficient intake of calories, protein and fat, poor physical development, less subcutaneous fat and smaller and flatter breasts. His complexion was dull and did not show the youthful vigor that adolescence should have.

The above is the experts’ introduction to the sexual development of male and female adolescents. Our young people should learn more about it. Some teenagers, because they do not understand the relationship between the two sexes, have embarked on the road of crime out of curiosity. Therefore, we must control ourselves and be beneficial to the healthy development of our physical and mental health.