1. Fetal Development
Lesson 4-9

2. Let’s view a baby’s growth from conception to birth
Let’s view a baby’s growth from conception to birth. Take a peek inside the womb to see how a baby develops from month to month.

3. FERTILIZATION/CONCEPTION
Fertilization: when a sperm penetrates an egg.
It’s also called conception.
he genetic makeup is complete, including the baby’s sex, coloring, and facial features.
Within three days : the fertilized egg, called a zygote, is dividing very fast into many cells.
It passes through the fallopian tube into the uterus, where implantation happens, it attaches to the uterine wall. The placenta starts to form and will nourish the baby.

4. 4 WEEKS After 3 weeks the zygote becomes an embryo.
The embryo is inside a thin, fluid-filled membrane called the amniotic sac, which surrounds and protects it.
At this point the baby is developing the structures that will eventually form his/her face and neck.
The heart and blood vessels continue to develop, and the lungs, stomach, and liver start to develop.
A home pregnancy test will show positive.

5. 8 WEEKS The embryo is now a little over half an inch in size.
Eyelids and ears are forming, and you can see the tip of the nose.
The arms and legs are well formed. The fingers and toes grow longer and more distinct.
Umbilical cord: a rope-like structure that connects the embryo and the mother’s placenta.

6. 12 WEEKS Around week 9 the embryo becomes a fetus.
The fetus measures about 2 inches and starts to make its own movements.
The doctor may hear the baby’s heartbeat with special instruments.
The sex organs of the baby should start to become clear.

7. 16 WEEKS
The fetus now measures about just over 4 inches and weighs about 3.5 ounces.
The baby’s eyes can blink, it develops eyebrows and eyelashes.
The heart and blood vessels are fully formed.
The baby’s fingers and toes have fingerprints.

8. 20 WEEKS
The baby weighs about 10 ounces and is a little more than 6 inches long.
The baby can suck a thumb, yawn, stretch, and make faces.
The mother may already feel the baby moving, which is called “quickening.”

9. TIME FOR AN ULTRASOUND An ultrasound is usually done at 20 weeks.
The doctor will make sure that the placenta is healthy and attached normally and that the baby is growing properly.
You can see the baby’s heartbeat and movement of its body, arms, and legs on the ultrasound.
You can usually find out if it’s a boy or a girl at 20 weeks.

10. 24 WEEKS
The baby weighs about 1.4 pounds now and responds to sounds, like music and conversations, by moving or increasing his/her pulse.
The mother may feel jerking motions if the baby hiccups.
With the inner ear fully developed, the baby may be able to sense being upside down in the womb.
The baby probably also has a scheduled sleeping pattern.

11. 28 WEEKS
The baby weighs about 2 pounds 6 ounces, and changes position often at this point.
If the mother delivered prematurely now, there is a good chance (90 %) that the baby would survive.

12. 32 WEEKS The baby weighs about 4 pounds and is moving around often.
The baby’s skin has fewer wrinkles as a layer of fat starts to form under the skin.
Between now and delivery, the baby will gain up to half his/her birth weight.
Sometime between weeks, the baby can use all 5 senses and has dreams.
Most women go to the doctor every two weeks at this stage of pregnancy.

13. 36 WEEKS
Fetuses differ in size depending on many factors such as gender, the number of babies being carried, and the size of the parents.
On average, a baby at this stage is about inches and weighs close to 6 pounds.
The brain has been developing rapidly.
Lungs are nearly fully developed.
The head is usually positioned down into the pelvis by now.
A pregnancy is considered “at term” once it’s past 37 weeks.

14. BIRTH A mother’s due date marks the end of her 40th week.
The delivery date is calculated using the first day of her last period.
Based on this, pregnancy can last between 38 and 42 weeks with a full-term delivery happening around 40 weeks.

15. GENETICS: HEREDITY, passing traits from parent to offspring.
Genes contain instructions that help determine a certain characteristic of an individual.
DNA the genetic information that makes up chromosomes, tiny threadlike structures that carry heredity information from generation to generation
Chromosomes are divided into smaller units called genes.
Every cell contains 46 chromosomes, 23 from the mother and 23 from the father
TRAIT a characteristic that an organism can pass to its offspring through its genes

16. Socrative.com, Room:DHJHEALTH Complete the Fetal Development Quiz
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Socrative.com, Room:DHJHEALTH
Complete the Fetal Development Quiz

17. Pregnancy: Do’s and Don’ts
Download and save the file: Prenatal Care Sheet
Draw a picture or symbol to represent each pregnancy do and don’t.

18. Pregnancy Do’s
See your doctor regularly. Prenatal care can help keep you and your baby healthy and spot problems if they occur.
Continue taking folic acid throughout your pregnancy. Getting enough folic acid lowers the risk of some birth defects.
Eat a variety of healthy foods. Include fruits, vegetables, whole grains, calcium rich foods, lean meats, and a variety of cooked seafood.
Get all essential nutrients, including iron, every day. Getting enough iron prevents anemia, which is linked to preterm birth and low-birth weight babies.
Drink extra fluids, especially water.
Get moving! Unless your doctor tells you otherwise, physical activity is good for you and your baby.
Gain a healthy amount of weight. Gaining more than the recommended amount during pregnancy increases a woman’s risk for pregnancy complications. It also makes it harder to lose the extra pounds after childbirth.
Wash hands, especially after handling raw meat or using the bathroom.
Get enough sleep. Aim for 7 to 9 hours every night. Resting on your left side helps blood flow to you and your baby and prevents swelling.
Set limits. If you can, control the stress in your life and set limits. Don’t be afraid to say “no” and ask for help from others.
Make sure health problems are treated and kept under control. If you have diabetes, control your blood sugar levels. If you have high blood pressure, monitor it closely.
Ask your doctor before stopping any medicines you take or taking any new medicines. Prescription, over-the counter, and herbal medicine all can harm your baby.
Get a flu shot. Pregnant women can get very sick from the flu and may need hospital care. Ask your doctor about the flu vaccine.
Always wear a seatbelt. The lap strap should go under your belly, across your hips. The shoulder strap should go between your breasts and to the side of your belly. Make sure it fits snuggly.
Join a childbirth or parenting class.

19. Pregnancy Don’ts
Don’t smoke tobacco. Smoking during pregnancy passes nicotine and cancer-causing drugs to your baby. Smoking also keeps your baby from getting needed nourishment and raises the risk of miscarriage, preterm birth, and infant death.
Avoid exposure to toxic substances and chemicals: cleaning solvents, lead and mercury, some insecticides, and paint.
Protect yourself and your baby from foodborne illness, which can cause serious health problems and even death. Handle, clean, cook, eat, and store food properly.
Don’t drink alcohol. There is no known safe amount a woman can drink while pregnant. Both drinking every day and drinking a lot of alcohol once in a while during pregnancy can harm the baby.
Don’t use illegal drugs. Tell your doctor if you are using drugs. ALL illegal drugs are very dangerous for you and your baby.
Don’t clean or change a cat’s litter box. This could put you at risk for toxoplasmosis, an infection that can be very harmful to the fetus.
Don’t eat swordfish, king mackerel, shark, and tilefish, which are high in mercury.
Avoid contact with rodents and their urine, droppings, or nesting material. This includes pet rodents: guinea pigs and hamsters. Rodents can carry a virus that can be harmful or even deadly to your unborn baby.
Don’t take very hot baths or use hot tubs or saunas. High temperatures can be harmful to the fetus, or cause you to faint.
Don’t use scented feminine hygiene products. These products might irritate your vaginal area, and increase your risk of a urinary tract infection or yeast infection.
Don’t douche. Douching can irritate the vagina, force air into the birth canal and increase the risk of infection.
Avoid x-rays. If you must have dental work or diagnostic tests, tell your dentist or physician that you are pregnant so that extra care can be taken.