TAMU PSYC 307 - 13 - Adolescence Physical Development (2) (20 pages)

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13 - Adolescence Physical Development (2)



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13 - Adolescence Physical Development (2)

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Pages:
20
School:
Texas A&M University
Course:
Psyc 307 - Developmntl Psychology

Unformatted text preview:

Dr van Widenfelt PSYC 307 100 Nov 18 2015 Agenda for unit on Adolescence Covers chapters 14 16 Puberty Physical changes Brain Development Cognitive Development Piaget Formal Op Identity Development Social emotional Development Eating disorders depression substance abuse behavior problems Physical development con t Hormones Are powerful chemical substances Secreted by the endocrine glands and carried through the body by the bloodstream Secretion of key hormones is controlled by the interaction of the hypothalamus the pituitary gland and the gonads sex glands ovaries testicles Hormones Two classes of hormones that have significantly different concentrations in males females Androgens are the main class of males sex hormones Estrogens are the main class of female hormones Hormones Testosterone is an androgen that is key in the development of puberty in boys External genitals enlarge Height increases Voice changes Secreted in far greater amounts by males than by females Estradiol is an estrogen that plays an important role in female pubertal development Breast uterine development takes place Skeletal changes occur Females produce more estradiol than males do Hormones Hormones important during puberty They are not new are same hormones that were there in the fetus Influences growth throughout life course What is different is the amount and effect See high levels during puberty that are normal to trigger changes in puberty but then go down again If stayed high then see disorders disease but in adolescence creates maturation Brain Development Receptors in hypothalamus Were there since birth Set at high set point during childhood so don t get activated During puberty set point gets lowered so now 5 x as sensitive Sets off puberty gets activated sends hormonal signal continued there is then activation releasing hormones Pituitary gland gets activated releases hormones Ovaries get stimulated to put out estrogen into blood Estrogen level rises till high enough Estrogen



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