2. Male Reproductive System

3.  Reproductive Anatomy of the Human Male.  External: - penis - scrotum  Internal: - gonads - accessory sex glands and ducts. Human reproduction involves intricate anatomy and complex behavior

4. Male Reproductive System

5. External structure of the penis:  glans penis  prepuce (foreskin)  There is no verifiable health benefit to circumcision.

6. Circumcision foreskinglans penisurethral opening sutures shaft corona

7.  The penis is composed of three layers of spongy erectile tissue.  During sexual arousal the erectile tissue fills with blood from arteries.  The resultant increased pressure seals off the veins that drain the penis.  The engorgement of the penis with blood causes an erection.

8.  Testes are the male gonads.  seminiferous tubules- form sperm

9.  Testes are located in the scrotum, outside the body cavity.  This keeps testicular temperature cooler than the body cavity.  The testes develop in the body cavity and descend into the scrotum just before birth.

10.  Sperm Pathway

11. Semen  Seminal fluid is thick, yellowish, and alkaline.  It contains mucus, fructose, a coagulating enzyme.  Accessory glands: 1.seminal vesicle 2.prostate gland

12. Seminal Vesicle Seminal vesicle: A pair of glands that secrete a liquid component of semen into the vas deferens. Secretion is alkaline Contains fructose,, coagulating enzyme,

13. Prostate gland: Location- surrounds and opens into the urethra where it leaves the bladder. Secretion- slightly alkaline fluid that activates the sperm and prevents them from sticking together  Prostate problems are common in males over 40.  Prostate cancer is one of the most common cancers in men. Prostate

14.  Ejaculation propels sperm from the epididymis to the vas deferens.  The vas deferens run from the scrotum and behind the urinary bladder.  Here each vas deferens joins with a duct from the seminal vesicle to form an ejaculatory duct.  The ejaculatory ducts open into the urethra.  The urethra drains both the excretory and reproductive systems. Ejaculation

15. Female Reproductive System

16. cervix vagina Fallopian tube ovary uterus bladder urethra clitoris Female Reproductive System

17. Internal reproductive: Vagina Cervix Fallopian tube (oviducts) Ovary Uterus cervix vagina Fallopian tube ovary uterus

18. Vagina: Where the sperm from the male is deposited. Connects the inner reproductive organs to the outside of the body. Where a baby exits the mother body. During this time the vagina is often called the birth canal.

19. Ovary: A pair of organs that produce the female reproductive cells (ova) Fallopian Tubes: Thin tubes that connect the ovaries to the uterus. Where the sperm and ova meet during reproduction.

20. Fimbrae & Fallopian Tube

21. Uterus: Where a fetus develops if an ova is successfully fertilized. Lining of the uterus changes throughout the menstrual cycle. The lining thickens in preparation for a fertilized ova. If no ova is fertilized then the lining is shed during menstruation (the period)

22. Cervix: Like the gateway between the interior and exterior reproductive organs. The cervix allows some sperm to enter the uterus but expels many more. During birth the cervix expands to allow the baby to leave the mother body.

24. The Uterine Cycle