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Period: to
Developmant Weeks
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Week 6
•The embryo has reached a size of about 8 mm (1/4 inch) in length.
•The spinal cord, which until now has been open, is beginning to close.
•The first blood cells and blood vessels are developing.
•Blood moves through these primitive vessels connected to the yolk sac.
•A pipe-shaped heart is formed and begins to beat.
•Optic pits form the start of the developing eye.
•The cells destined to be the arms and legs are in place.
http://www.baby2see.com/development/week6.html -
Week 9
•The embryo has grown to measure 30 mm (1.2 inches) in length.
•The fingers and toes are well defined. Cartilage and bones begin to form.
•The upper lip as well as the nose tip is being formed.
•The tongue begins to develop and the larynx is developing.
•The eyelids are developed, although they stay closed for several months.
•The main construction of the heart is complete.
http://www.baby2see.com/development/week9.html -
Week 12
•The fetus is now about 2.5 inches (6cm) length and weighs about 0.7 ounce (20 g).
•The feet are almost half an inch (1cm) long.
•The fetus starts moving spontaneously.
•The face is beginning to look like a baby's face.
•The pancreas is functioning and producing insulin.
•Fingernails and toenails appear.
•The baby can suck his thumb, and get hiccups.
http://www.baby2see.com/development/week12.html -
Week 18
•The fetus is now 6 inches long and weighs 7 ounces.
•The fetus measures about 15cm and weighs almost 200 grams.
•They can hear sounds and may be startled by loud noises.
•Recognizable active and rest periods.
•The skin is building a protective wax layer (vernix).
http://www.baby2see.com/development/week18.html -
Week 21
•Length is now measured crown to heel.
•The fetus has grown to 10.5 inches (27 cm) - 12.7 ounces (360 grams).
•It is now gaining weight steadily, with fat being added to the body.
•Bone marrow has started making blood cells.
•Their small intestine is starting to absorb sugars.
http://www.baby2see.com/development/week21.html -
Week 24
•The child is now gaining around 3 ounces (90 grams) a week.
•Baby weighs about 1.3 pounds and is 12 inches long.
•Baby weighs about 600 grams and is 30cm (crown to heel) long.
•The eyelids can be seen very clearly.
•If born at this stage is officially considered viable, they may well be able to survive.
http://www.baby2see.com/development/week24.html -
Week 30
•Baby measurements are 16 inches and weighs about 3 pounds.
•Length is 40cm and your baby's weight is 1.4 kilograms.
•The head is almost 3.5 inches (8cm) in diameter.
•The feet are nearly 2.5 inches (6cm) long.
•The wrinkled skin is becoming smoother now.
•In boys, the testicles have moved down to the groin.
•The baby controls its own body temperature.
http://www.baby2see.com/development/week30.html -
Week 33
•The baby inside you is now about 4.4 pounds (2 kg) and around 17.5 inches (44cm) in length.
•The diameter of the head is about 8.5cm.
•The baby fuzz, lanugo, is disappearing.
•Your baby drinks about a pint of amniotic fluid a day.
•You may gain a pound a week (500g) for the rest of your pregnancy.
•Half of your weight gain will go directly to your baby.
http://www.baby2see.com/development/week33.html -
Week 36
•The baby is about 19 inches (48 cm) long.
•Weight is around 6 pounds (2.7 kg).
•The baby's body is becoming chubby as fat layers build.
•Between now and birth they may gain about an ounce (30g) a day
•You may feel contractions of the womb, called Braxton Hicks contractions.
http://www.baby2see.com/development/week36.html -
Week 37
•Typically, baby now measures 19.5 inches (50 cm) from the head to the heel.
•Baby weighs up to 7 pounds or 3 kilograms.
•The head diameter is over 3.5 inches (9cm).
•The water could break at any time.
•If it does happen, see a doctor immediately.
http://www.baby2see.com/development/week37.html -
Week 38
•Baby is about 20 inches (51 cm) and weighs about 7.5 pounds (3.4 kilograms).
•The soft down, which covered the body throughout the pregnancy, is now disappearing.
•The body fat is continuing to build up, baby putting on about 1oz (28 grams) a day.
•The wrinkled skin is becoming 'baby' smooth.
•The baby may have reached its final birth position.
•Most babies are born head first with only about 3 percent coming out feet first.
http://www.baby2see.com/development/week38.html -
Week 39
•The average baby is about 20 inches (51 cm) and weighs about 7.5 pounds (3400 grams).
•The baby has reached its final birth position.
•It will be cramped inside your uterus for much movement.
•Your baby will continue to punch and kick but lower in your abdomen, under your pelvis.
•The head is about 4 inches (10 cm) in diameter.
•Most of the baby's downy coating of lanugo has now disappeared.
http://www.baby2see.com/development/week39.html -
Week 40
•You have now reached the time of delivery.
•All systems are developed and ready to go.
•Now it is just a matter of time.
•Baby is about 20 inches (51cm) and weighs approximately 7.5 pounds (3.5 kg).
•The head has a diameter of about 4 inches (10 cm).
http://www.baby2see.com/development/week40.html
