INCREASE IN HEIGHT The most conspicuous change during puberty is the sudden increase in height. At this time the long bones, that is, the bones of the arms and the legs elongate and make a person t
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CHANGE IN BODY SHAPE AND VOICE Change in body shape Have you noticed that boys in your class have broader shoulders and wider chests than boys in junior classes? This is because they have enter
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INCREASED ACTIVITY OF SWEAT AND SEBACEOUS GLANDS During puberty the secretion of sweat glands and sebaceous glands (oil glands) increases. Many young people get acne and pimples on the face at
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DEVELOPMENT OF SEX ORGANS Look up Fig. 9.1 and 9.3 which show sex organs of humans. At puberty, male sex organs like the testes and penis develop completely. The testes also begin to produce s
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REACHING MENTAL, INTELLECTUAL AND EMOTIONAL MATURITY Adolescence is also a period of change in a person’s way of thinking. Adolescents are more independent than before and are also self-consc
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