PSY_214_sg2 - PSY 214 Adolescent Psychology Study Guide,...

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PSY 214 – Adolescent Psychology Study Guide, Chapter 2 1. What are the roles of the hypothalamus and pituitary glands in the initiation of puberty? What role does leptin seem to play? The hormonal changes during puberty begin in the hypothalamus,  which is located in the lower part of the brain, beneath the cortex.  The  hypothalamus has profound and diverse effects on psychological and  physiological motivation and functioning in areas such as eating, drinking,  and the experience of pleasure, including sexual pleasure.  The  hypothalamus stimulates and regulates the production of other hormones  by other glands.  To imitate puberty the hypothalamus begins gradually to  increase its production of gonadtropin-releasing hormone.  Recent evidence  indicates that this occurs once a threshold level of body fat is reached.  Fat  cells produce a protein, leptin, that provides the signal to the  hypothalamus.  The increase in GnRH affects the pituitary gland, a gland  about half an inch long located at the base of the brain.  GnRH causes  hormones called gonadotropins to be released from the pituitary.   This information and more can be found on pages 34 ~ 35. 2.
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PSY_214_sg2 - PSY 214 Adolescent Psychology Study Guide,...

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