FRHD 2280 Lecture Notes - Lecture 2: Puberty, Earl, Erris

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 2280
• Professor: Carol Anne Hendry

Document Summary

Derived fro(cid:373) the lati(cid:374) (cid:449)ord (cid:858)pu(cid:271)es(cid:272)ere(cid:859) (cid:449)hi(cid:272)h (cid:373)ea(cid:374)s to (cid:862)gro(cid:449) hair(cid:455)(cid:863) The body undergoes a biological revolution that dramatically changes the adoles(cid:272)e(cid:374)t(cid:859)s a(cid:374)ato(cid:373)(cid:455), ph(cid:455)siolog(cid:455), a(cid:374)d physical appearance. Not all parts of the body grow at the same pace. Asynchronicity in gro(cid:449)th e(cid:454)plai(cid:374)s the (cid:862)ga(cid:374)gl(cid:455) look(cid:863) i(cid:374) earl(cid:455) adoles(cid:272)e(cid:374)(cid:272)e. Extremities are the first to hit the growth spurt. Muscle mass and body fat men store < muscle, women more body fat. Primary sex characteristics: produ(cid:272)tio(cid:374) of sper(cid:373, de(cid:448)elop(cid:373)e(cid:374)t of se(cid:454) orga(cid:374)s, produ(cid:272)tio(cid:374) of eggs, development of sex organ. Women are born with about 400,000 immature eggs in each ovary; this drops to 80,000 by puberty, strongest survive. Once a girl reaches her first menstrual period (menarche), one egg develops into a mature egg (ovum) about every 28 days. Females release about 400 eggs over the course of their reproductive lives. Males have no sperm in their testes when they are born and do not produce any until they reach puberty.