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Chapter Five

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Sex and Your Body Chapter Five * Female Sex Organs * External Female Genitals (Vulva) Mons pubis Labia majora Labia minora Prepuce Clitoris Internal Female Genitals ... – PowerPoint PPT presentation

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Title: Chapter Five


1
Sex and Your Body
  • Chapter Five

2
Female Sex Organs
  • External Female Genitals (Vulva)
  • Mons pubis
  • Labia majora
  • Labia minora
  • Prepuce
  • Clitoris
  • Internal Female Genitals
  • Vagina
  • Uterus
  • Cervix
  • Ovaries
  • Fallopian tube

3
Figure 5.1 The female sex organs
4
Male Sex Organs
  • Penis
  • The glans
  • Corpus spongiosum
  • Urethra
  • Scrotum
  • Function Allows for sperm development at a
    temperature cooler than the body (93.6 degrees F)
  • Testes
  • Epididymis
  • Vas deferens
  • Prostate gland
  • Cowpers glands
  • Seminal vesicles
  • Circumcision

5
Male External Genitalia
6
Figure 5.2 The male sex organs
7
Hormones and The Reproductive Life Cycle
  • Sex Hormones
  • Adrenal cortex produces androgens Sex hormones
  • Testes produce testosterone
  • Ovaries produce estrogen and progesterone
  • Pituitary gland produces LH and FSH
  • Hypothalamus (controls the release of hormones
    from pituitary)

8
Differentiation of the Embryo
  • Determined by the fertilizing sperm at the time
    of conception
  • Conception - combining of 23 pairs of chromosomes
  • Of the 23 pairs, one pair sex chromosomes
  • Egg carries an X sex chromosome
  • Sperm carries either a X or Y chromosome
  • XX provides the blueprint to produce a female
  • XY provides the blueprint to produce a male

9
Female Sexual Maturation
  • Physical changes begins around 8-13 with breast
    development and rapid body growth between 9 and
    15.
  • The 4 Phases of the Menstrual Cycle
  • Menses
  • Days 1-5
  • Estrogenic phase
  • Days 6-13
  • Ovulation phase
  • Day 14
  • Progestational phase
  • Days 15-27

10
Figure 5.4 The menstrual cycle
11
Menstrual Problems
  • Dysmenorrhea
  • Cramps, bloating, nausea associated with the
    menstrual cycle
  • Some symptoms caused from prostaglandins
  • Premenstrual Tension (PT)
  • Premenstrual syndrome (PMS)
  • Premenstrual dysphoric disorder (PMDD)
  • Pharmacological treatment
  • Lifestyle changes to reduce symptoms
  • Limit salt intake
  • Exercise
  • Dont use alcohol or tobacco
  • Eat a nutritious diet
  • Relax

12
Male Sexual Maturation
  • Normally occurs 2 years later than girls
  • Begins about 10 or 11 years old
  • Physical changes
  • Testicular growth
  • Penis growth
  • Pubic hair growth
  • Voice deepens
  • Increase in height

13
Aging and Human Sexuality
  • Women Menopause
  • Ovaries gradually cease functioning
  • Decreasing estrogen levels
  • Increased risk of disease
  • Men
  • Gradual decrease of testosterone
  • Loss of energy/sex drive/stamina

14
Sexual Response Cycle
  • Four phases typically characterize the sexual
    response cycle
  • Excitement phase
  • Plateau phase
  • Orgasmic phase
  • Males (refractory phase)
  • Resolution phase

15
Sexual Problems
  • Biological conditions affecting women
  • Vaginitis
  • Vaginismus
  • Endometriosis
  • Pelvic Inflammatory Disease (PID)
  • 50-75 of PID cases are caused
  • by STDs
  • Biological conditions affecting men
  • Prostatitis (acute vs. chronic)
  • Testicular cancer
  • Most common in men in their twenties and thirties

16
Sexual Dysfunctions
  • Common sexual dysfunctions
  • Male
  • Erectile dysfunction
  • Premature ejaculation
  • Delayed ejaculation
  • Women
  • orgasmic dysfunction
  • Treatment
  • Physical examination
  • Pharmaceutical
  • Relaxation and massage techniques
  • Sources of Sexual Dysfunctions
  • Psychosocial
  • Behavioral

17
Sexual Behavior
  • The development of sexual behavior
  • Gender roles and gender identity
  • Gender role is everything you do in your daily
    life that expresses your maleness or femaleness
  • Gender identity is your personal, inner sense of
    being male or female
  • Transsexuals feel that their biological sex does
    not match their gender identity
  • Transvestites wear clothing identified with the
    other gender
  • Intersexed born with ambiguous genitals, neither
    fully female nor fully male.
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