PSY BEH 101D Lecture Notes - Lecture 37: Pubic Hair, Puberty, Nocturnal Emission
18 Dec 2019
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Mean age= 11: female first, for most girls, their breasts enlarge or pubic hair appears. As these changes occur, the female grows in height and her hips become wider than her shoulders. Growth spurt is approximately two years earlier for girls. Increase in height about 3. 5 inches mean age= 9 years old. Menarche a girl"s first menstruation comes rather late in the pubertal cycle. Initially, her menstrual cycles may be highly irregular. For the first several years, she may not ovulate every menstrual cycle; some girls do not ovulate at all until a year or two after menstruation begins: marked weight gains coincide with the onset of puberty. During early adolescence, girls tend to outweigh boys, but by about age 14 boys begin to surpass girls. Hormonal changes: hormones: powerful chemical substances secreted by the endocrine glands and carried through the body by the bloodstream.
