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Human Reproductive System
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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.
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
Female Reproductive System
OVARIES1.The ovaries produce the female gonads, or eggs.
2.Ovaries also produce estrogen which maintains secondary sexual characteristics.
Female Reproductive System
FALLOPIAN TUBES1.The fallopian tubes (also known as the oviducts) allow passage of the egg from the ovary to the uterus.
2.This is where fertilization occurs.
Female Reproductive System
UTERUS1.The uterus is a hollow, pear-shaped organ where implantation of the blastocyst and fetal development takes place.
2.One end, the cervix, opens into the vagina, while the other is connected tothe fallopian tubes.
Female Reproductive System
CERVIX1.The cervix is the lower, narrow portion of the uterus where it joins with the top end of the vagina.
2.The cervix has an opening to allow sperm and menstrual fluid to move through.
Female Reproductive System
VAGINA1.The vagina is a hollow muscular organ that joins the cervix to the outside of the body.
2.The vaginal walls are lined in a mucus membrane for protection and to keep it moist.
3.Receives sperm
Male Reproductive System
TESTES1.The testes produce the male gametes, or sperm.
2.Testes also produce testosterone which maintains secondary sexual characteristics.
Male Reproductive System
SCROTUM1.The scrotum is a pouch-like structure that hangs behind the penis.
2.It holds and protects the testes.
3.It also contains numerous nerves and blood vessels.
Male Reproductive System
EPYDIDYMIS1.The epididymis is a whitish mass of tightly coiled tubes cupped against the testicles.
2.It acts as a maturation and storage place for sperm before they pass into the vas deferens.
Male Reproductive System
VAS DEFERENS1.The vas deferens, also known as the sperm duct, is a thin tube that starts from the epididymis to the urethra.
2.Allows sperm to travel out of the testicles.
Male Reproductive System
SEMINAL VESICLES1.Seminal vesicles are sac-like structures attached to the vas deferens at one side of the bladder.
2.They produce a sticky, yellowish fluid that provides sperm cells with energy.
Male Reproductive System
PROSTATE GLAND1.The prostate gland surrounds the ejaculatory ducts at the base of the urethra, just below the bladder.
2.Adds alkaline fluid to help in the production of semen.
Male Reproductive System
URETHRA1.The urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids from the body.
2.In males, the urethra travels through the penis, and carries semen as well as urine.
Male Reproductive System
PENIS1.The penis is the male sex organ.
2.It releases the sperm from the body.
What are the major milestones of the first trimester?
1. All organ systems begin to form (cell differentiation)
2. Nervous system begins forming (Neurulation)
3. Heart begins beating4. Embryo begins to
move5. Ears, eyelids, and
teeth buds are formed
What are the major milestones of the second trimester?
1. Mostly growth2. Fetal skeleton forms3. Mother can feel the
fetus moves4. Fetus can now hear.5. Hair forms on the
body
What are the major milestones of the third trimester?
1. Fetus turn into a head-down position.
2. Fat is deposited beneath the skin
3. A greasy substance forms on the fetus skin.
4. Lungs mature5. Fetus can see light
and react to sounds.
Show What You KnowA fertilized egg undergoesseveral stages before it is successfully implanted. The diagram below showsthese stages as the fertilized egg travels through the female human reproductive system.In which of the following structures of the female human reproductive system is the blastocyst implanted during normal human development?§ovary§uterus§vagina§amniotic sac
Show What You Know
Which of the following correctly compares the functions of the vas deferens and the fallopian tubes?A.Sperm leaves the body through the vas deferens, and eggs leave the body through the fallopian tubes.B.Sperm travels through the vas deferens, and eggs travel through the fallopian tubes.C.The vas deferens produces sperm, and the fallopian tubes produce eggs.D.The vas deferens stores sperm and the fallopian tubes store eggs.
Show What You Know
Which of the following structures in the human female reproductive system is correctly matched with its function?A.ovary – site where fertilization takes placeB.uterus – serves as storage for immature eggsC.oviduct – serves as the location for blastocyst implantationD.cervix – separates the bottom part of the uterus from the vagina and provides support for the developing fetus during the pregnancy
Show What You Know
Which of the following describes part of a baby's development in the second trimester of pregnancy?A.The fetus turns into a head-down position in the uterus.B.The fetus develops fat under the skin and practices breathing movements.C.The fetus is in the embryonic stage, and the amniotic sac forms.D.The fetus grows soft hair called lanugo over its skin and can swallow and hiccup.
Show What You Know
Which of the following pairs of male and
female reproductive structures are most alike
in their function?
A.testes and ovaries
B.prostate gland and vagina
C.vas deferens and uterus
D.seminal vesicle and oviduct
