Uterus and vagina, as well as labia and clitoris, increase in size. Pubic hair is well established and breasts grow further. Boys tend to enter puberty between the ages of 9 and 14, with the average age being 11 . They tend to grow most quickly between ages 12 and 15. The growth spurt of boys is usually about two years later than that of girls.
Pubic hair appears, followed by underarm and facial hair.
Voice deepens and may sometimes crack or break. Adam's apple, or larynx, gets bigger. Testicles begin to produce sperm. All rights reserved. The material on this site may not be reproduced, distributed, transmitted, cached, or otherwise used, except with the prior written permission of Nutricise.