Changes in Puberty and Adolesecence

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  • Changes in Puberty and Adolescence
    • Puberty
      • Secondary sexual characteristics emerge
      • Starts at age 10 in girls and age 12 in boys (on average)
        • Usually complete by late teens
        • Breasts develop ( females)
        • Pelvis becomes broader ( Females)
        • Menstruation begins ( Females)
        • The voice becomes deeper ( Males)
        • Shoulders become broader ( Males)
        • Production of Sperm begins ( Males)
        • Reproductive organs increase in size ( Both sexes)
    • Adolescence
      • Sudden increase in growth rate.
        • Leads to  adult who can care for young.
        • Called second growth spurt.
          • Height may increase by 8-16 cm per year
            • In girls occurs between the ages of  10 and 14 but in boys it is usually between ages 12 and 16 .
              • This leads to men being generally larger  than women
      • Caused by ...
        • Puberty
          • Secondary sexual characteristics emerge
          • Starts at age 10 in girls and age 12 in boys (on average)
            • Usually complete by late teens
            • Breasts develop ( females)
            • Pelvis becomes broader ( Females)
            • Menstruation begins ( Females)
            • The voice becomes deeper ( Males)
            • Shoulders become broader ( Males)
            • Production of Sperm begins ( Males)
            • Reproductive organs increase in size ( Both sexes)

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