Adolescence 1. Complete the pictures with the changes adolescents have. 2. Classify the changes into: a. Primary sexual characteristics b. Secondary sexual characteristics Boys Girls Primary sexual characteristics Secondary sexual characteristics 3. - Let’s compare similarities and differences. Boys have… while girls have… http://www.lebteen.com/images/puberty.jpg Boys Girls Primary sexual characteristics testes and penis get bigger ovaries start to release egg (reproductive cells (periods start) organs) Secondary sexual characteristics (physical characteristics) shoulders get wider "Primary" sexual characteristics are typically present at birth and directly involved in reproduction. "Secondary" sexual characteristics typically develop later in life (usually during puberty ) and are not directly involved in reproduction. Level of Female Male definition Biological levels (Sex) Primary sex characteristics (Sex) Usual sex XX in humans XY in humans chromosomes Usual gametes ova spermatozoon Usual gonads ovaries testes Usual predominant sex Estrogen , progesterone testosterone hormones Usual anatomy of clitoral crura , vagina , uterus , corpora cavernosa , urethra , internal genitalia fallopian tubes prostate , seminal vesicles Usual anatomy of glans clitoris , labia , vulva , glans penis , scrotum , phallus , external genitalia clitoral hood , perineal urethra foreskin fused perineum Secondary sex characteristics (Sex) Breasts , menstrual cycle , Facial and body hair , development development of "hourglass" of "triangular" body form (i.e., ▼), Usually body form (i.e., 8), relatively relatively taller, relatively less shorter in height, relatively more body fat, relatively lower voice body fat Usually both Pubic hair, underarm hair sexes Psychosocial levels ( Gender ) Usual Assigned "It's a girl " "It's a boy " sex Usual Gender of "You are a girl" "You are a boy" rearing Usual Gender "I am a girl/woman" "I am a boy/man" identity Usual Gender "feminine " social behavior "masculine " social behavior role Usual sexual androphilic gynephilic orientation http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0008198.html http://lgfl.skoool.co.uk/viewdetails_ks3.aspx?id=458 years old male female years old Stage when the It starts at the Adolescence Boys Girls changes Mind map changes characteristics Differences between the characteristics characteristics characteristics Puberty BOYS GIRLS Age Physical changes: Body Physical changes: Face Puberty BOYS GIRLS • About 2 year later than • About 12 (before than Age girls. boys) • Between the ages of 10 and 17 • Growth spurt: boys grow • Growth spurt: Girls grow Physical taller than girls (+ 13 taller, but shorter than changes: Body cm). Extra length of legs boys. Girls have shorter • Boys grow bigger legs. • Shoulders and muscles • Girls grow bigger. grow • Shoulders and muscles • grow less in girls Breast buds • • Hair: under arms, chest Pubic hair (later), legs, pubic. • Sexual organs mature • Sexual organs mature: • Breasts enlarge darker colour • Hips widen • Testicles descend • Begin to menstruate • Penis enlarges. Erections • Sweating • Voice deepens • Wet dreams. Develop sperm. Ejaculation • Sweating Physical • Facial hair: beard • Smaller nose and sinuses changes: Face • Larger nose, bigger than boys. sinuses • Thinner and smaller • Bigger brows brows • Prominent bony cheeks • Less prominent bony • Larger mandibles cheeks • Acne • Smaller mandibles • Acne .