1. Human Sexuality Outline

2. Functions  To reproduce  Includes testes and ovaries  Passing of genetic material to offspring  To reproduce  Includes testes and ovaries  Passing of genetic material to offspring

3. Vocab  Sex cells:  Gametes  Sperm/ova  Fertilization:  Joining of gametes  Sex cells:  Gametes  Sperm/ova  Fertilization:  Joining of gametes  Zygote:  Conception – 2 weeks  Embryo:  2 wks – 8 wks  Fetus:  8 wks – birth  Neonate:  Birth to one month of age

4. Organs of Male Reproduction  Testes: 4 -5 cm  Produce spermatozoa (sperm)  Secrete testosterone  Testes: 4 -5 cm  Produce spermatozoa (sperm)  Secrete testosterone

5. Organs of Male Reproduction Flow of Spermatozoa  Epididymis:  Tube on each testes, stores sperm  Sperm are transported by vas deferens  Seminal vesicle:  Adds fluid that increases volume and nourishes sperm Flow of Spermatozoa  Epididymis:  Tube on each testes, stores sperm  Sperm are transported by vas deferens  Seminal vesicle:  Adds fluid that increases volume and nourishes sperm  Prostate gland:  Below bladder, fluid that protects sperm  Urethra:  Urine and semen excretion  Ejaculation:  Expulsion of semen

6. Organs of Female Reproduction  Ovaries:  Produce: eggs, estrogen, progesterone  Hormones prepare egg for fertilization and growth of placenta  Fallopian Tubes: transport ovum (egg)  Fertilization: occurs in fallopian tube  Ovaries:  Produce: eggs, estrogen, progesterone  Hormones prepare egg for fertilization and growth of placenta  Fallopian Tubes: transport ovum (egg)  Fertilization: occurs in fallopian tube  Uterus: muscular organ  Zygote: implanted in uterus after fertilization  Endometrium: inner layer of uterus, shed during menstrual cycle  Vagina:  Muscular tube that extends from cervix to outside of body.

7. External Structures: vulva  Labia majora: folds of adipose tissue that protect vaginal opening  Mon pubis: fat that joins the labia  Labia minora: folds of skin between labia majora  Clitoris: erectile tissue  Mammary glands: breasts  Labia majora: folds of adipose tissue that protect vaginal opening  Mon pubis: fat that joins the labia  Labia minora: folds of skin between labia majora  Clitoris: erectile tissue  Mammary glands: breasts

8. Menstrual Cycle  Menstruation: signals puberty  Lasts about 28 days  Ovulation: Occurs about day 14  Menses: Occurs about day 21  Climacteric: menopause, average age 52  Menstruation: signals puberty  Lasts about 28 days  Ovulation: Occurs about day 14  Menses: Occurs about day 21  Climacteric: menopause, average age 52