human devleopment 10 19

human devleopment 10 19 - Sequence of pubertal changes:...

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Sequence of pubertal changes: Female: asynchronicity age of first appearance Growth of pubic hare 8-14 Growth of breast tissue 8-13 Growth spurt (height and weight) 9.5-14.5 o Gain most height on avg.between 10.5 and 14 yrs. Gains approx. 8-10 in (20 cm.) Ends approx o Mean weight gain=38 lbs;more fat mass o By puberty: 5.4 muscle to fat ratio Mearch-avg. 12.5 yrs 10-16.5 o Ovulation begins later than menstruation o Ovulation is inconsiderate for approx. o 2 yrs after menarche Underarm hair 10-16 yrs Oil and sweat producing glands, acne 10-16 yrs Male: asynchronicity Growth of testes and scrotal sac Growth of pubic hair Growth spurt in height and weight; growth of muscle tone o Gain most height on avg. between 12.5 and 16 yrs o Will gain 12-13 in. o Ends approx. 18 yrs Mean weight gain=42 lbs; more lean body mass o By puberty 3:1 muscle to fat ratio Growth of penis 10.5-14.5 yrs Voice changes 11-15 yrs
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Spermarche 12-14 yrs Growth of facial and axillary hair 12-17 yrs Oil and sweat producing glands,acne 12-17 yrs Key differences in genders:
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This note was uploaded on 02/01/2011 for the course DFST 1013 taught by Professor Fields-moore during the Fall '08 term at North Texas.

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human devleopment 10 19 - Sequence of pubertal changes:...

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