Female - Major changes for puberty in girls is 10/13 years / girls develop breasts, hair grows in pubic region and under the arms / ovaries enlarge and ovulation begins / uterus, vagins and associated glands enlarge and menstruation begins / hips widen and there are height and weight growth spurts.
Males - Major changes for puberty in boys is 12/14 years / rapid growth of the voice box causes the voice to deepen / boys grow facial hair, hair in their pubic region, under their arms and on their chest / testes and scrotum enlarge and begin to produce sperm / penis and accesory glands grow and start to secrete / height and weight growth spurt, shoulders widen but hips remain slim. Significant muscle development.
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