90% of junior high school students lack sexual knowledge. 10 things to refuse for adolescent girls

The survey shows that 80% -90% lack the understanding of the basic knowledge of adolescence, and 46% do not know that girls have menstruation, and boys' spermatorrhea means that they have Fertility... As the saying goes, women have 18 major changes, and girls generally enter adolescence from the age of 10 to 12. In the following years, girls' bodies underwent significant changes, including the development of adolescent girls.

The first is sexual development. Including the development of gonads (ovaries), internal and external reproductive organs and Secondary sex characteristic

At around the age of 13, the girl's ovaries gradually grow and her menstruation begins to become damp. Correspondingly, the uterus, vagina, and external genitalia gradually grow, elongate, and mature. These changes mentioned above are generally "inconspicuous" and often do not attract people's attention.

However, the Secondary sex characteristic, as an external change of women, is more noticeable: at the age of 9-10, breasts begin to develop, which is the first Secondary sex characteristic shown by young girls, and is a sign of puberty; At the age of 11, pubic hair appears; At the age of 12 to 13, the nipple and areola continue to increase, but remain integrated with the entire breast contour; The pubic hair continues to increase and develops towards the pubic mound and middle part of the abdominal wall, becoming thinner and thicker, and the pigment gradually settles.

What is adolescence? In China, the age range of 12-18 years is considered adolescence. Adolescence is the second peak period of human growth and development, which undergoes significant physiological changes. Height and weight rapidly increase, and various organs such as the heart, lungs, and liver function become increasingly mature. All indicators meet or approach adult standards. Generally speaking, girls and boys experience puberty for about a year, from breasts to menarche, for about 2-3 years. Axillary and pubic hair grow, the pelvis becomes larger, and subcutaneous fat increases throughout the body (especially in the chest, shoulders, etc.), forming a plump female body shape. The boy's beard grows, his Adam's apple protrudes, his voice is deep, and his musculoskeletal development is solid, forming his magnificent physique.

Adolescence is a period of rapid changes in the physiological and psychological development of adolescents, a transitional period from childhood to adulthood, and a critical period for the gradual formation of a worldview and outlook on life.

After the girl is 13 years old (some girls are early), her menarche is generally irregular. In the previous year or two, the ovarian function is not perfect or mature enough to ovulate at the same time as menarche or later, the axillary hair grows, the pubic hair is a unique inverted Triangular distribution distribution, and the gland in the areola area at the bottom is parallel to the level of the Pubic symphysis. When the plump and enlarged breast forms the second bulge of 14-15 years old, regular ovulatory menstruation can occur