Maturation Sequences of Puberty
Source: Pearson Allyn Bacon Prentice Hall
Topics: Physical Growth and Puberty (Age 10-13), Physical Growth (Ages 13-18), Puberty
Girls typically progress through puberty before boys. Puberty begins in girls sometime between ages 8 and 13 (on average, at age 10.) For boys, puberty gets its start between 9 and 14 years (on average, at 11 1/2 years.) The table below describes the physical changes in girls and boys during puberty.
| In Girls | In Boys |
|
Initial elevation of breasts and beginning of growth spurt (typically between 8 and 13 years; on average, at 10 years) Appearance of pubic hair (sometimes occurs before elevation of breasts) Increase in size and structure of uterus, vagina, labia, and clitoris Further development of breasts Peak of growth spurt Menarche, or onset of menstrual cycle (typically between 9 and 15 years) Completion of height gain (about two years after menarche) and attainment of adult height Completion of breast development and pubic hair growth |
Enlargement of the testes and changes in texture and color of scrotum (typically between 9 and 14 years; on average, at 11½ years) Increase in penis size and appearance of pubic hair (average, at 12½ years) Spermarche, or first ejaculation Peak of growth spurt, accompanied by more rapid penis growth Appearance of facial hair Deepening voice, as size of larynx and length of vocal cords increase Completion of penis growth Completion of height gain and attainment of adult height Completion of pubic hair growth |
Excerpted From:
© 2007, Merrill, an imprint of Pearson Education Inc. Used by permission. All rights reserved.
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