Sexual Maturation

Sexual Maturation
Sexual maturity, the process of reproduction functions of the human body, reflecting the gradual development of secondary sexual characteristics and until puberty. In humans during puberty call transitional, or puberty, it lasts an average of about 5 years. Age of puberty are individual variations (for girls from 8 to 10 and 16 to 17 years for boys from 10 to 12 to 19 to 20 years). The appearance of secondary sexual characteristics in girls between 8 to 10 years for boys from 10 to 12 years called for early sexual maturation (it is usually on the constitutional factors). Sexual development, beginning with girls up to 8 years for boys and 10 years, considered it premature.
For girls in puberty can be suspended two phases : the first (prepubertatnuyu), which is characterized by rapid growth in body size, the appearance of secondary sexual characteristics, development of female genitalia, and the second, beginning with the first menstruation (menarche). The second phase is the completion of the development of secondary sexual characteristics, slowing growth, a shortage of menstrual periods, ending sexual somatic development. Your body is ready for the future mothers.
Boys puberty begins at an average of 2 years later than girls. During this period, there is a change of voice distorters (mutation), there exists ovolosenie to begin a skeleton of the male type. After about 2 - 3 years of the first appearance of secondary sexual characters are boys pollution. Under the influence of an active endocrine glands increases in a gipotalamo- hypophyseal system (see Hypothalamus, Gipofiz) gonadotropnyh hormones that stimulate sexual function iron increases Secretion sex hormones (estrogen and androgenov), increasing somatotropnogo hormone products, as well as tireotropnogo hormone that stimulates thyroid function. TB of sexual hormones, somatotropnogo hormone and thyroid hormones has accelerated physical development and the development of sexual characteristics. During puberty a sexual instinct, awakening sexual desire (libido), an emerging sexual awareness.
Delayed puberty feel the absence of secondary sexual characteristics for girls over the age of 13 and boys under 14 years old. This is the most important constitutional factors somatic diseases, negative psychological climate in the family (see microclimate family), poor living conditions, malnutrition. Delayed puberty may come as a consequence of the defeat gipotalamo- hypophyseal system or gonad (sexual glands). When deviations from the average early puberty and violations of phasing (see Gipogonadizm) need to consult the doctor endocrinologist.