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Canada (161,538)
Psychology (184)
46-224 (5)
Chapter 2

Psychology 46-224 Chapter 2: Adolescence – Chapter 2 – Biological Foundations

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Scott Mattson

ADOLESCENCECHAPTER 2BIOLOGICAL FOUNDATIONSTHE BIOLOGICAL REVOLUTION OF PUBERTYDramatically changes the adolescents anatomy physiology and physical appearanceHypothalamus has profound and diverse effects on physiological and psychological motivation and functioning areas such as eating drinking and sexualityGonadotropins are released from the pituitaryThe two gonadotropins are folliclestimulating hormone FSH and luteinizing hormone LH which stimulate the development of gametes egg cells and spermSex hormones the estrogens estradiol and the androgens testosterone By midteens estradoil production is about 8x as high in females as it was before puberty and only about twice as high for males Testosterone 20x as high in males 4x for femalesAt puberty pituitary gland increases production of the hormone adrenocorticotropic hormone ACTH which causes the adrenal glands to increase androgen productionThe androgens released by the adrenal glands have the same effects as those released by the testesAt peak height velocity when adolescent growth spurt is as its maximum girls grow at about 2
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