Personal health is the premise of happiness and the foundation of social civilization and progress. Exploring healthy sex is of great significance to medical and educational undertakings.
Health must meet the following four criteria:
First, physical and mental development is complete. From the moment a person becomes a fetus, sexual development is accompanied by physical and mental development. Physical and mental development is completely guaranteed and sexual development is complete. Physical and mental development is a process from fertilization to adulthood, reaching a "complete" stage according to general standards.
Generally speaking, when it comes to the development of body and mind, people are limited by knowledge and pay attention to the body with real feelings, such as length, weight, figure and five senses. Moreover, they lack understanding of abstract heart, mind, emotion, will and personality or don't know where to pay attention. Especially sexual development. The complete development of sex must include related emotions and socialization. Healthy sex, comprehensively measured from biology, psychology and sociology, needs clear five characteristics.
The first sexual characteristic exists in every nucleus of the human body. There are two sex chromosomes in the nucleus of normal people, and the code of sexual development is attached. Women are the same two (xx) and men are different two (xy).
In the first step of life development, the different combinations of sex chromosomes in the fertilized egg (the first cell) determine whether the embryo is male or female. In the first step of development, there may be healthy or pathological division. At least 1% of the fetus has one or several sex chromosomes, not two.
In this way, children with chromosomal abnormalities will be doomed to imperfect organ development and even mental retardation. There are at least 13 known sex chromosome abnormalities, many of which will lose sexual ability and fertility. The sex identification of athletes is to detect whether they are male or female by taking oral epithelial cells.
The second sex symbol is the sex organ. In the process of sexual development, it is not only restricted by sex chromosomes, but also by the concentration of other substances in the body. It may be distorted in an unfavorable environment, commonly known as hermaphroditism. Some children's sex organs are neither fish nor fowl, and it is difficult to distinguish between men and women. In this case, doctors usually need to check whether the sex chromosome is xx or xy, and then decide the surgical plan after obtaining the consistency of the first and second sex characteristics.
However, if the parents are negligent, and the child is over 3 years old and the gender identity has been confirmed, it is advisable to pay less attention to the orientation of sex chromosomes. Most sexologists advocate that the surgical plan should be decided according to the sex that children like, because psychological desire is more difficult to change than physiological structure.
The most striking and diverse contrast between the two sexes is the third sexual characteristic, which is also called accessory sexual characteristic in the book. Outstanding secondary sexual characteristics are manifested in the height, weight and musculoskeletal strength of men relative to women; Locally, the man's body hair is thick and his Adam's apple is abrupt, which makes his voice thick and his skin rough; Women's breasts and buttocks are rich in fat, and their trunks and even limbs are full of curves and elasticity. These ordinary people can judge that the physical beauty of men and women reflects each other and forms a combination of health and beauty.
The fourth personality characteristic of the perfect difference between men and women has crossed into the psychological field, and men and women have different tendencies in temperament, thinking and taste. This difference also occurs in the fetal period. Some mothers recalled that male fetuses were more active than female fetuses during pregnancy. The range of children's activities, boys are much bigger than girls, and they are more keen on making guns and sticks than girls.