murrosiään

Murrosiään refers to the physiological process of puberty in humans. It is a period of rapid growth and sexual maturation that occurs during adolescence. During puberty, a variety of physical and psychological changes take place, driven by hormonal shifts. In males, these changes typically include the deepening of the voice, the growth of facial and pubic hair, and the enlargement of the testes and penis. In females, puberty involves the development of breasts, the onset of menstruation (the menstrual cycle), and the growth of pubic and underarm hair.

These changes are initiated by the hypothalamus in the brain, which signals the pituitary gland to release hormones that stimulate the gonads (testes in males, ovaries in females). The gonads then produce sex hormones, primarily testosterone in males and estrogen and progesterone in females, which are responsible for the development of secondary sexual characteristics. The timing and progression of puberty can vary significantly among individuals, influenced by genetics, nutrition, and overall health. This period of development is crucial for the transition from childhood to adulthood and reproductive maturity.