The Tanner stages, or Tanner scale, is a scale of secondary sex characteristics used to assess physical maturation in children, adolescents, and adults. It can be assessed by examining the pubic hair, penis, and testes/scrotum in a male and by examining the pubic hair and breasts in a female.
Pubic Hair Stages
Penis Stages
Testes and Scrotum Stages
Pubic Hair Stages
Breast Stages