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Boys Puberty - (Answer)Start of Puberty: Usually begins between ages 9.5 and 13.5.
Growth Spurt: age 12.5
Spermarche (First Ejaculation): Begins around the age of 13
End of Puberty: 18 years old on average.
Girls Puberty - (Answer)Start of Puberty: Typically begins between ages 8 and 13.
Growth Spurt: starts age 10
Menarche (First Menstruation): age 12.5
End of Puberty: 16 years old on average.
Summarize the domino effect and its role in puberty. - (Answer)The hypothalamus is a
regulatory center in the brain and it sends GnRH to the pituitary gland, triggered by achieving a
certain threshold of body fat. The pituitary gland released gonadotropins (FSH and LH) which
trigger the production of sperm and ovarian follicles, along with sex hormones being released
into the bloodstream. These sex hormones lead to the development of secondary sex
characteristics like pubic hair growth, breast growth, etc.
, Late-Maturing Girls - (Answer)have not been identified for being at risk for major problems,
although these individuals may feel annoyed at being behind their peers regarding sexual
development. The poor outcomes are by no means inevitable.
Early-Maturing Boys - (Answer)typically receive positive attention for being the tallest and
strongest in their class. This positive attention is often from both girls and other boys, who may
look up to early maturing boys who have a natural advantage in sports and other activities.
Late-Maturing Boys - (Answer)may be at-risk for problem behaviors if their appearance and
behavior, paired with an unsympathetic and bullying school situation, results in their being
rejected by their peers. The poor outcomes are by no means inevitable.
Profile of people with anorexia nervosa - (Answer)are more likely to come from middle- to
upper-class families that are highly controlling, common for it to run in the family.
are more likely to be very perfectionistic and tightly controlling of their own behaviors.
may come from a culture or part of society where there is a high emphasis on being thin.
may also have low levels of key neurotransmitters.
Profile of people with bulimia nervosa - (Answer)may also run in families. However, these
individuals are more likely to be impulsive and engage in other reckless behaviors. Research has