Post Date November, 16 2024
When entering puberty, the second characteristic of young girls is very obvious, and their sexual organs gradually develop. Only when both male and female sexual physiology and psychological maturity, can they have the ability to have sexual relationships.
What are the signs of female maturity?
1. Breasts
After entering puberty, women not only rapidly increase in weight and height, but also begin to develop breasts, pubic hair, the first menstrual cycle, and pelvic enlargement. The timing and differences of these changes vary from person to person. From the age of 13 to 17, women's breasts begin to develop, and breast fat and blood vessels also increase. The overall fullness of the breasts can be seen directly from the appearance. At the same time, the areola around the nipples gradually expands to a pink color, and the breasts are fully developed. About 80% of women from the age of 16 to 19 years old
2. Pubic hair
After the age of 10, female pubic hair begins to gradually develop. Fine distribution of pubic hair can be directly observed on the skin of the pubic mound, but this is not true pubic hair. True pubic hair grows from sparse to dense pubic hair, then gradually thickens and appears in a curly state
3. Menstruation
70% of girls have menarche from the age of 13 to 15, initially occurring at 11 years old and at the latest at 19 years old. The menstrual cycle is usually very irregular in the first year after menarche, but they also do not ovulate. The menstrual cycle is normal in the second year
What are the signs of male maturity?
1. Testis
Generally, the testicles of males begin to gradually grow around the age of 12, and the testicular volume approaches that of adults at the age of 18. The most important manifestation of male adolescent growth and development is testicular development and increased volume. At the same time, the boy began to ejaculate after the age of 13, and the interstitial cells of the testicles began to secrete male hormones, resulting in a normal erection of the penis.
2. External genitalia
After the age of 9 to 12, the scrotum of boys gradually becomes larger, the scrotum turns red, and the skin quality also undergoes certain changes. After the age of 12 to 15, the length and middle of the penis also increase, and the penis becomes thinner. From the age of 15 to 18, the scrotum and penis further develop and grow, the color of the scrotum also deepens, the penis becomes thicker, and the hair of the penis gradually extends forward, detaching from the foreskin of the penis.
3. Pubic hair
Boys begin to grow axillary hair at the age of 12, becoming sparse and slender, gradually becoming dense and dark. Pudendal hair is mainly influenced by male hormones. As the sexual organs mature, the secretion of male hormones also increases. After the age of 18, boys' pubic hair is distributed in a pointed triangular shape..
