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The primary purpose of puberty is to develop the capacity for . |
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The hormones that drive the changes of puberty are initially produced . |
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The monitors and controls the levels of hormones in the body. |
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The produce the hormones that affect physical and sexual development. |
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Levels of a protein produced by fat cells, called , may influence the hypothalamus to trigger the increase in hormones at the onset of puberty. |
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The average teen grows during the course of puberty. |
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The adolescent growth spurt takes place, on average, in females than males. |
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Changes in the allow the adolescent to sexually reproduce. |
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Changes in the give the adolescent the physical appearance of a sexually mature adult. |
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The onset of menstruation in girls, called , occurs relatively late in the process of pubertal maturation. |
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Pubertal maturation may be influenced by exposure to hormones that are excreted by others, including family members, called . |
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research allows scientists to examine different age groups at the same time, helping us understand age differences. |
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research allows scientists to examine the same group over time (as the subjects get older), helping us understand changes that occur as adolescents develop. |
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Biological changes during puberty seem to cause adolescents' sleep cycle to shift, causing teens to want to go to sleep later and wake up later than children and adults. This is called the . |
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One reason adolescents tend to gain weight during and after puberty is that the decreases about 15 percent during puberty. |
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is a disorder characterized by overeating followed by self-induced vomiting (or the use of laxatives or excessive exercise) in order to avoid weight gain. |
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is a disorder characterized by continued self-induced food deprivation. |
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One possible explanation for the existence of eating disorders is that they are just one aspect of a generalized psychological difficulty called . |
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While there have been dramatic improvements in medicine and treatment of childhood and adolescent illnesses, there is an increasing threat from unhealthy choices teens make. This is called the . |
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Practitioners focus now on promoting and steering teens away from health-compromising behaviors. |
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2002 McGraw-Hill Higher Education