male and female reproductive systems n.
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Male and Female Reproductive Systems

Male and Female Reproductive Systems

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Male and Female Reproductive Systems

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  1. Male and Female Reproductive Systems Sexual Education Lesson #2

  2. BELLRINGER You have 2 minutes to list as many parts of the male reproductive anatomy that you can think of…(Ex: penis)

  3. Ever wonder how the universe could allow the existence of someone as annoying as your bratty little brother or sister?

  4. The answer lies in reproduction. If people — like your parents (ew!) — didn't reproduce, families would die out and the human race would cease to exist.

  5. All living things reproduce… • REPRODUCTION • the process by which organisms make more organisms like themselves

  6. REPRODUCTION • Reproduction is something that sets living things apart from nonliving matter. But even though the reproductive system is essential to keeping a species alive, unlike other body systems it's not essential to keeping an individual alive.

  7. Sex Cells • Aka “gametes” • The male gamete • sperm • Female gamete • Egg or ovum

  8. Male and Female Sex Cells These cells meet in the female's reproductive system to create a new individual. Both the male and female reproductive systems are essential for reproduction.

  9. Genes • Humans, like other organisms, pass certain characteristics of themselves to the next generation through their genes • the special carriers of human traits. • come from the father's sperm and the mother's egg • The genes parents pass along to their children are what make children similar to others in their family, but they are also what make each child unique.

  10. Male Reproductive System • Male reproductive organs • Aka: genitals (pronounced: jen-ih-tulz) • located both inside and outside the pelvis • The male genitals include: • the testicles • the duct system (epididymis and vas deferens) • the accessory glands (seminal vesicles and prostate gland) • penis

  11. Testicles • There are two testicles (pronounced: tes-tih-kulz) • Aka: testes (pronounced: tes-teez) • They produce and store millions of tiny sperm cells. • oval-shaped • grow to be about 2 inches (5 centimeters) in length and 1 inch (3 centimeters) in diameter • part of the endocrine system • produce hormones, including testosterone (pronounced: tes-tos-tuh-rone).

  12. Epididymis/Vas Deferens • Epididymis • Part of the duct system • Set of coiled tubes that connects to the vas deferens • Vas Deferens • Muscular tube • Passes alongside testicles • Transports semen

  13. Scrotum • Pouch-like structure • Hangs outside the pelvis and houses the epididymis and the testicles • Regulates temperature of testicles

  14. Accessory Glands • Provide fluid that lubricate the duct system and nourish sperm • Seminal vesicles • Urethra • Channel that carries semen to the outside of the body through the penis • Channel through which urine passes and leaves the bladder as it exits the body • Prostate gland • Produces some parts of semen • Surrounds ejaculatory ducts at the base of the urethra

  15. Penis • Two parts • Shaft • Glans • Made up of spongy tissue that can expand and contract

  16. Circumcision • Removal of foreskin covering the glans • Usually performed during the first days of a baby boy’s life • Doesn’t alter the ability for the penis to function • Not medically necessary • Religious beliefs • Hygiene • cultural/social reasons

  17. Sperm • Very small (1/600th of an inch) • Have a head (contains genetic material) and short tail (used to push themselves into the epididymis) • Mixed with seminal fluid

  18. Female Reproductive System Review • Unlike the males, the female reproductive system is located entirely in the pelvis • It’s job is to: • Produce eggs • Have sexual intercourse • Protect and nourish the fertilized egg until it is fully developed • Give birth

  19. Vulva • External part of the female reproductive organs • Vulva means covering • Covers the opening to the vagina

  20. External Female Anatomy • Mons pubis • Fleshy area located just above the top of the vaginal opening • Labia • Two pairs of skin flaps • Surround vaginal opening • Clitoris • Small sensory organ • Urethra • Carries urine from bladder to exit the body

  21. Internal Reproductive Organs • Vagina • Muscular hallow tube • Extends from uterus • 3-5 inches long • Can expand and contract to be wider and narrower • Functions • Sexual intercourse • Pathway baby takes out of a woman’s body during childbirth • Route for menstrual blood to leave uterus during a woman’s period • Uterus • Fallopian tube • Ovaries

  22. Internal Reproductive Organs • Uterus • Aka. Womb • Connects to the vagina at the cervix • Where a baby matures (not the stomach) • Contains some of the strongest muscles in the female body (to accommodate a growing fetus) • Contractions during child birth occur in the uterus and they help to push the baby out during labor • Cervix • Strong thick walls • Normally very small but expands to allow a baby to pass

  23. Internal Reproductive Organs • Fallopian tube • Located in the upper corners of the uterus • Connect the uterus to the ovaries • Ovaries • Two oval-shaped organs • Located in the upper right and left of the uterus • Produce, store, and release eggs into the fallopian tubes (ovulation) • Produce estrogen and progesterone (female sex hormones)

  24. Menstruation • Once a month a female ovulates and a tiny egg is sent into one of the fallopian tubes • If the egg is not fertilized, it dries up and leaves the body about 2 weeks later • This is called menstruation • Blood and tissues from the inner lining of the uterus are the menstrual flow • Lasts 3-5 days • 1st period is called “menarche”

  25. What is PMS? • Discomfort is common in the days leading up to a girl’s period • 7 days before the period begins • Physical and emotional symptoms • Acne • Bloating • Fatigue • Backaches • Sore breasts • Headaches • Constipation • Diarrhea • Food cravings • Depression • Irritability • Difficulty concentrating/handling stress

  26. Cramps • Called “prostaglandins” • Chemicals in the body that cause the muscles in the uterus to contract • Causes dull or sharp pains

  27. Monthly Cycle • It takes about 2 years from a girls 1st period for her menstrual cycle to be regular • Average for women is 28 days