PSY 3105 Chapter Notes - Chapter 2: Adrenal Gland, Feedback, Pubic Hair

• School: University of Ottawa
• Department: Psychology
• Course: PSY 3105
• Professor: David Collins

Document Summary

Ch 1 mc what distinguishes a pop of a developing country from one of a developed country? lower proportion of older people in the population. Puberty: (cid:271)od(cid:455) u(cid:374)dergoes (cid:271)iologi(cid:272)al re(cid:448)olutio(cid:374) that dra(cid:373)ati(cid:272)all(cid:455) (cid:272)ha(cid:374)ges the adoles(cid:272)e(cid:374)t"s a(cid:374)ato(cid:373)(cid:455), physiology, and physical appearance. Hpg (hypothalamus-pituitary gonads) axis: hypothalamus monitors levels of sex hormones via endocrine system; feedback loop, when sex hormone levels are too low hypothalamus signals pituitary with gnrh > Insulin-like growth factor substance produced in liver that may be liked to onset of puberty. Igf-i increases at puberty and returns to much lower levels afterward. Asynchronicity body parts develop at different rates, extremities grow before the trunk. Pubertal caveat: virtually all the studies considered in the order of pubertal development have been conducted with white adolescents in the west. In sharp contrast to the western studies, which found pubic hair and breast buds developed together about 2 years before menarche.