1. Chapter 5
Sex and Your Body

2. Learning Objectives
Structure and function of male and female sex organs
How sex organs function during sexual activity
Sexual health problems
Sexual dysfunctions
Responsible sexual behavior

3. POP QUIZ
Worksheet #36

4. Sexuality Biological sex Gender traits and behaviors
Sexual anatomy and physiology
Sexual functioning and practices
Social and sexual interactions

5. Sexual Anatomy: Gonads
Reproductive organs that produce germ cells and sex hormones
Ovaries – Egg (ovum)
Testes – Sperm
Worksheet #35

6. Female External Reproductive Organs (Genitalia) – Vulva

7. Female Internal Genitalia

8. Male External Genitalia

9. Male Internal Genitalia

10. Sex Hormones Androgens – primarily male hormones
Steroids promote masculinization in males and females
Adrenal glands
Testosterone promotes masculinization in males and females; regulates other sexual functions in women
Males: Testes, adrenal glands
Females: Ovaries, adrenal glands
Primarily female hormones – Female secondary sex characteristics, menstrual cycle, gestation, and sexual functioning in men
Estrogen
Ovaries, Adrenal glands, Testes
Progesterone
“For Pregnancy”
Corpus luteum, Adrenal glands, Placenta
Prog. Produced by corpus luteum for about first 6 months of pregnancy by when the placenta has taken over.

11. Sex Hormone Determines Gender
23rd Pair of Chromosomes
XY = Male
Testosterone
XX = Female
No Testosterone XY XX

12. Homologous Reproductive Organs
Penis
Scrotum
Testis
Clitoris
Labia majora
Ovary

14. Sexual Functioning: Stimulus – Response Cycle (Fig. 5-4, p. 134)
Physical Stimulus
Psychological Stimulus
Stages of Sexual Response
Excitement
Plateau
Orgasm
Resolution

15. Sexual Response Terms Vasocongestion Myotonia Refractory period
Accumulation or engorgement of blood
Myotonia
Increased muscle tension
Rhythmic muscular contractions
Refractory period
Men: have a refractory period
Cannot immediately be re-stimulated to orgasm
Women: no refractory period

16. Sexual Response Cycle

17. Common Sexual Health Problems (p. 135)
Physical (biological) conditions
Vaginitis (including yeast infection)
Endometriosis
Pelvic inflammatory disease (PID)
Prostatitis
Testicular cancer
50-75% of PID cases are caused by a STI organism associated with diseases like gonnorhea and chlamydia. Infection of upper reproductive tract.

18. Common Sexual Dysfunctions (p. 135)
Disturbances in sexual desire, performance, or satisfaction that have physical and/or psychological origins
Vaginismus
Orgasmic dysfunction
Erectile dysfunction (impotence)
Premature ejaculation
Retarded ejaculation

19. Sexual Dysfunction is Common
Results from a national survey of people aged 18 to 59 years reported in the February 10, 1999, issue of The Journal of the American Medical Association indicate that sexual dysfunction was common among women (43 percent) and men (31 percent).

20. Prevalence of Sexual Problems

21. Development of Sexual Behavior
Gender roles – your everyday behavior and attitudes based on your sex
Gender identity – your inner sense of being male or female
Cultural differences – culturally expected or appropriate
Portrayal of sex in the media
Childhood and adolescence
Adult sexual experiences
Disability or illness
Sexual orientation
Combination of biological, psychological, and social factors

23. Varieties of Sexual Behavior
Celibacy, or abstinence
Masturbation
Touching
Oral-genital stimulation
Cunnilingus
Fellatio
Anal intercourse
Vaginal intercourse

24. Ask yourself the following:
Is this sexual behavior healthy and fulfilling for me and/or my partner?
Is it safe?
Does it lead to the exploitation of the other?
Does it take place between responsible, consenting adults?
Pluralistic society carries over into our sexual practices. Instead of generalizations about what is normal and abnormal, ask these questions to explore your feelings about what is normal for you.

25. Responsible Sexual Behavior
Making choices about your sexual behavior directly affects you and another person
Communication
Agreed-upon activity
Sexual privacy
Contraception use
Safer sex
Sober sex
Be responsible for consequences

26. On your own…
Worksheet #38
Tips for Today, p. 147