Physical development in adolescence

Primary sexual characteristics - reproductive organs changes and development.

Menstruation (periods), testies drop, ***********, growth of penis and vagina, ovaries begin to release eggs, spontaneus erections.

Secondary sexual characteristics - outward signs of development.

Body hair, height, breasts, voice pitch, wider hips (female), facial hair, pubic hair, broarder shoulders (boys decrease, girls increase).

The role of hormones…