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Chapter Fourteen: Exploring the Origins of Sexuality

Chapter Fourteen: Exploring the Origins of Sexuality. Biological Bases of Human Sexuality. Genetic basis XX = female XY = male Gonadal basis Structural development Male genital development Female genital development Biological sexuality and the childhood years Puberty

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Chapter Fourteen: Exploring the Origins of Sexuality

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  1. Chapter Fourteen: Exploring the Originsof Sexuality

  2. Biological Bases of Human Sexuality • Genetic basis • XX = female • XY = male • Gonadal basis • Structural development • Male genital development • Female genital development • Biological sexuality and the childhood years • Puberty • Females: Menarche • Males

  3. Growth and Development of Sexuality

  4. Psychosocial Bases of Human Sexuality • Psychosocial sexuality: Masculine and feminine aspects of sexuality • Gender: Biological basis of sexuality • Gender identity: Recognition of one’s gender • Gender preference: Emotional and intellectual acceptance of one’s own gender

  5. Psychosocial Bases of Human Sexuality • Gender adoption: The long process of learning the behavior that is traditional for one’s gender • Gender identification: Achievement of a personally satisfying interpretation of one’s masculinity or femininity

  6. Androgyny • Blending of both masculine and feminine qualities

  7. Male Reproductive System • Testes • Sperm development • Interstitial cell-stimulating hormone • Follicle-stimulating hormone • Scrotum • Ducts • Seminal vesicles • Prostate gland • Cowper’s glands • Penis

  8. Male Reproductive System

  9. Male Reproductive System • Age-related hormone changes • Male menopause (andropause) • Decrease in level of androgens • Prostate size increases

  10. Female Reproductive System • Mons pubis • Labia majora and labia minora • Clitoris • Vestibule • Vagina • Uterus • Fallopian tubes • Ovaries

  11. Female Reproductive System

  12. Menstrual Cycle • Menstrual phase • ¼ - ½ cup of blood and tissue is sloughed off during a 5-7 day period • Preovulation phase • Lasts about a week • Release of FSH and LH leading to ovulation around day 14 • Post-ovulation phase • Build-up of endometrial tissue • Role of progesterone

  13. Menstrual Cycle

  14. Related Conditions • Premenstrual syndrome (PMS) • Physical and psychological symptoms that recur during the same phase of the menstrual cycle • Premenstrual dysphoric disorder (PMDD) • Severe form of PMS • Fibrocystic breast condition • Excessive secretory activity producing swollen, firm, or hardened tender breast tissue • Amenorrhea • Absence of menstruation • Menopause • Gradual decline in reproductive system function, usually by late 40s to mid 50s

  15. Additional Aspects of Human Sexuality • Reproductive sexuality • Related to procreation • Genital sexuality • Nonreproductive use of sex organs (recreation and communication) • Expressionistic sexuality • Cognitive, affective, and behavioral expressions of one’s gender

  16. Chapter Fourteen: Exploring the Origins of Sexuality

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