Development of embryo and foetus

3 weeks
1. Develops blood, bone and muscle
2. Heart starts beating
3. About 4-6mm long
8 weeks
1. Main organs are developing
2. Limbs, hands and feet are forming
3. About 2.2cm long
20 weeks
1. Heartbeat can be heard
2. About 25cm long
3. Weighs around 350-400g
28 weeks
1. Lanugo starts to grow
2. Weighs around 900g
3. About 38cm long
40 weeks
1. Lanugo usually disappears
2. Weighs around 3-3.5kg
3. About 50-55cm long
12 weeks
1. Baby can close hands,curl toes
  1. Baby can also clench eye muscles. Human features are becoming more distinct
2. The baby's eyes are moving closer together (once at the side of her head)
  1. The baby's ears are nearly in their final position.
  2. The baby's organs are now starting to do more complex things. The liver is creating bile and the kidneys are secreting urine to the bladder.
16 weeks
1. The baby is now about the size of an avocado
  1. Baby weighs about 100g and is about 10cm long
  2. In the next 3 weeks the foetus will go through tremendous changes. Such as doubling in weight and adding centimeters to the height of the foetus.
2. You may find that your foetus will start to play with the umbilical cord. They may start to pull and grab or even tug at it.
19 weeks
1. Baby weighs 190g at 18weeks
  1. By 19 weeks baby weighs around 240g.
  2. Also at 18 weeks, if you're having a girl uterus and fallopian tubes are now in place and if you're having a boy his genitals will be distinct and recognisable.
2. Another scan will take place and you may get a slight glimpse of what baby is up to.
3. Baby is now swallowing amniotic fluid and her kidneys continue to make urine. The hair on the baby's head will start to sprout also.
4. The foetus sensory development has reaches it's peak this week.

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Development of embryo and foetus

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	Created by Lauren Thrower about 8 years ago

	Copied by Latisha Mushemi about 8 years ago