Presentation on theme: "Human Reproductive System"— Presentation transcript:
1 Human Reproductive System SC.912.L Describe the basic anatomy and physiology of the human reproductive system. Describe the process of human development from fertilization to birth and major changes that occur in each trimester of pregnancy.
2 What do I need to know?how the following structures function in the female reproductive system: ovaries, oviduct (fallopian tube), uterus, cervix, and vagina.how the following structures function in the male reproductive system: testes, scrotum, epididymis, vas deferens, seminal vesicle, prostate gland, urethra, and penis.summarize the major changes that occur during each trimester of human development
3 Female Reproductive System OVARIESThe ovaries are the female gonads. They produce the female gametes, or eggs.Ovaries also produce estrogen which maintains secondary sexual characteristics.
4 Female Reproductive System FALLOPIAN TUBESThe fallopian tubes (also known as the oviducts) allow passage of the egg from the ovary to the uterus.This is where fertilization occurs.
5 Female Reproductive System UTERUSThe uterus is a hollow, pear-shaped organ where implantation of the blastocyst and fetal development takes place.One end, the cervix, opens into the vagina, while the other is connected to the fallopian tubes.
6 Female Reproductive System CERVIXThe cervix is the lower, narrow portion of the uterus where it joins with the top end of the vagina.The cervix has an opening to allow sperm and menstrual fluid to move through.
7 Female Reproductive System VAGINAThe vagina is a hollow muscular organ that joins the cervix to the outside of the body.The vaginal walls are lined in a mucus membrane for protection and to keep it moist.Receives sperm
8 Male Reproductive System TESTESThe testes produce the male gametes, or sperm.Testes also produce testosterone which maintains secondary sexual characteristics.
9 Male Reproductive System SCROTUMThe scrotum is a pouch-like structure that hangs behind the penis.It holds and protects the testes.It also contains numerous nerves and blood vessels.
10 Male Reproductive System EPIDIDYMISThe epididymis is a whitish mass of tightly coiled tubes cupped against the testicles.It acts as a maturation and storage place for sperm before they pass into the vas deferens.
11 Male Reproductive System VAS DEFERENSThe vas deferens, also known as the sperm duct, is a thin tube that starts from the epididymis to the urethra.Allows sperm to travel out of the testicles.
12 Male Reproductive System SEMINAL VESICLESSeminal vesicles are sac-like structures attached to the vas deferens at one side of the bladder.They produce a sticky, yellowish fluid that provides sperm cells with energy.
13 Male Reproductive System PROSTATE GLANDThe prostate gland surrounds the ejaculatory ducts at the base of the urethra, just below the bladder.Adds alkaline fluid to help in the production of semen.
14 Male Reproductive System URETHRAThe urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids from the body.In males, the urethra travels through the penis, and carries semen as well as urine.
15 Male Reproductive System PENISThe penis is the male sex organ.It releases the sperm from the body.
16 What are the major milestones of the first trimester? All organ systems begin to form (cell differentiation)Nervous system begins forming (Neurulation)Heart begins beatingEmbryo begins to moveEars, eyelids, and teeth buds are formed
20 What are the major milestones of the third trimester? Fetus turn into a head-down position.Fat is deposited beneath the skinA greasy substance forms on the fetus skin.Lungs matureFetus can see light and react to sounds.