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© 2011 McGraw-Hill Higher Education. All rights reserved. Chapter Twelve: Understanding Sexuality.

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Presentation on theme: "© 2011 McGraw-Hill Higher Education. All rights reserved. Chapter Twelve: Understanding Sexuality."— Presentation transcript:

1 © 2011 McGraw-Hill Higher Education. All rights reserved. Chapter Twelve: Understanding Sexuality

2 © 2011 McGraw-Hill Higher Education. All rights reserved. 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 © 2011 McGraw-Hill Higher Education. All rights reserved. Growth and Development of Sexuality

4 © 2011 McGraw-Hill Higher Education. All rights reserved. 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 © 2011 McGraw-Hill Higher Education. All rights reserved. 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 © 2011 McGraw-Hill Higher Education. All rights reserved. Male Reproductive System Testes –Sperm development –Interstitial cell-stimulating hormone –Follicle-stimulating hormone Scrotum Ducts Seminal vesicles Prostate gland Cowper’s glands Penis

7 © 2011 McGraw-Hill Higher Education. All rights reserved. Male Reproductive System

8 © 2011 McGraw-Hill Higher Education. All rights reserved. Male Reproductive System Age-related hormone changes Male menopause (andropause) –Decrease in level of androgens –Prostate size increases

9 © 2011 McGraw-Hill Higher Education. All rights reserved. Female Reproductive System Mons pubis Labia majora and labia minora Clitoris Vestibule Vagina Uterus Fallopian tubes Ovaries

10 © 2011 McGraw-Hill Higher Education. All rights reserved. Female Reproductive System

11 © 2011 McGraw-Hill Higher Education. All rights reserved. Menstrual Cycle Menstrual phase – 1 / 4 – 1 / 2 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

12 © 2011 McGraw-Hill Higher Education. All rights reserved. Menstrual Cycle

13 © 2011 McGraw-Hill Higher Education. All rights reserved. Related Conditions Premenstrual syndrome (PMS) –Physical and psychological symptoms that occur in the days just before menstruation 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

14 © 2011 McGraw-Hill Higher Education. All rights reserved. The Human Sexual Response Pattern Excitement stage – arousal stage Plateau stage – leveling off of arousal immediately before climax Orgasmic stage – neuromuscular tension is released Resolution stage – return of the body to a preexcitement stage

15 © 2011 McGraw-Hill Higher Education. All rights reserved. Sexual Response Pattern

16 © 2011 McGraw-Hill Higher Education. All rights reserved. Sexual Response Pattern

17 © 2011 McGraw-Hill Higher Education. All rights reserved. Differences Between Men and Women in the Sexual Response Pattern Men are not multiorgasmic Men reach orgasm quicker during coitus Women are multiorgasmic Women reach orgasm as quickly as men during masturbation

18 © 2011 McGraw-Hill Higher Education. All rights reserved. Patterns of Sexual Behavior Celibacy –Self-imposed avoidance of sexual intimacy Masturbation –Self-stimulation of the genitals Fantasy and erotic dreams Shared touching Genital contact

19 © 2011 McGraw-Hill Higher Education. All rights reserved. Patterns of Sexual Behavior Oral-genital stimulation –Fellatio (oral stimulation of a male’s genitalia) –Cunnilingus (oral stimulation of a female’s genitalia) Intercourse –Penile penetration of vagina –Associated with procreation Anal sex –Performed by both heterosexual couples and gay men

20 © 2011 McGraw-Hill Higher Education. All rights reserved. Aging and Sexuality Sexual activity does decline with age but a significant population of older adults remain sexually active Changes in women: –Vaginal lubrication decreases –Reduction in orgasmic contractions Changes in men: –Erection process is prolonged –Decrease in contractions at orgasm –Ejaculation decreases in force and volume

21 © 2011 McGraw-Hill Higher Education. All rights reserved. Bonds Between People Love –Emotional attachment of various levels Intimacy –Sharing of deep feelings

22 © 2011 McGraw-Hill Higher Education. All rights reserved. Relationships and Lifestyles Singlehood Cohabitation Gay and Lesbian Partnerships Same-Sex Marriage Single parenthood Marriage Divorce Half of all marriages end in divorce Unrealistic expectations

23 © 2011 McGraw-Hill Higher Education. All rights reserved. Chapter Twelve: Understanding Sexuality


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