Fetal Development Timeline

Timeline created by AndersonErica
  • Week Eight

    Week Eight
    At a length of about half an inch right now, the baby has graduated from blueberry-sized to raspberry-sized. But weekly growth is getting a bit hard to estimate, and here's why: Growth occurs at about the rate of one millimeter each day, but that growth isn't necessarily just in height. Spurts can occur in the arms, legs, back, and other parts of the baby's body. So, big changes will be occurring every which way in the coming months.
  • Week Ten

    Week Ten
    The baby's growth is fast and furious when you are 10 weeks pregnant. He or she is nearly an inch and a half long and the size of a prune, but not nearly as shriveled (even with all the time it spends in water). In fact, the baby is really taking a human shape now. Bones and cartilage are forming, and small indentations on the legs are developing into knees and ankles. The arms (complete with elbows) can flex already.
  • Week Twelve

    Week Twelve
    This week marks a turning point for the baby. At 12 weeks pregnant, the herculean task of developing new bodily structures is nearing an end as most of the baby's systems are fully formed. Now comes the maintenance phase, during which the fetus' systems continue to mature for the next 28 weeks and the organs get to work. The baby is now the size of a large plum.
  • Week Fifteen

    Week Fifteen
    The baby is growing bigger each week — he or she is as long as four and a half inches right now. If you hold a large navel orange in your hand — that's how big the baby is at 15 weeks pregnant. Babies practice breathing, sucking, and swallowing so that when they leave the womb, they'll have the skills necessary to survive. Fetal body movements continue to get practice this week, too. But because the baby weighs so little, you won't feel the calisthenics in you body. http://www.whattoexpect.com
  • Week Eighteen

    Week Eighteen
    At 18 weeks pregnant, the baby is hitting the height chart at five and a half inches long, and weighs about five ounces.The baby is now doing twists, rolls, kicks, and punches. The baby is also big enough for you to start feeling those movements.Nerves, now covered with a substance called myelin (which speeds messages from nerve cell to nerve cell). And those in the brain are further specializing into the ones that serve the senses.http://www.whattoexpect.com
  • Week Twenty One

    Week Twenty One
    At about seven inches in length and almost 11 ounces in weight, the baby is about the size of a large banana. By 21 weeks pregnant, the baby swallows at least several ounces of amniotic fluid each day to practice swallowing and digesting.These are skills the baby will need as soon as he or she arrives.
  • Week Twenty Four

    Week Twenty Four
    The baby weighs about 1 lb 5 oz right now and sports a crown-to-rump length of about 21 cm .What’s still missing from the picture is the fat that will be piled on under baby’s skin. Until those fat deposits are made, that tender skin is still very transparent, which means a close look would let you see clear through to all the organs, bones and blood vessels. http://wha ttoexpect.co.uk/pregnancy/pregnancy-calendar/week-24-of-pregnancy-foetal-hearing/
  • Week Twenty Seven

    Week Twenty Seven
    Most babies this age still like to snuggle in a slightly curled position inside the uterus (thus the term ‘foetal position’). Even so, beginning at this stage, the baby’s length will be measured from top of head to toe – which makes the baby around 37 cm now. And at around 2 lb 2 oz, he or she has doubled in weight from four weeks ago.The baby’s auditory development is progressing as the network of nerves to the ears matures.http://whattoexpect.co.uk/pregnancy/pregnancy-calendar/week-27-of-preg
  • Week Thirty

    Week Thirty
    The baby’s height and weight haven’t changed much in the past week. Until now, the surface of the baby’s brain was smooth. Now, your foetus’s brain is taking on those characteristic grooves and indentations. Those wrinkles allow for an increased amount of brain tissue. Also, the baby’s bone marrow has taken over production of red blood cells.Much of the lanugo is beginning to disappear now because both fat and the brain are regulating your baby’s temperature. http://whattoexpect.co.uk/pregnancy/
  • Week Thirty Two

    Week Thirty Two
    This week your baby weighs around 3 lb 14 oz and could be up to 48 cm long. At 32 weeks pregnant, the baby has probably settled into the head-down, bottom-up position in the pelvis in preparation for birth. That’s because the foetus’s head fits better at the bottom of the inverted pear-shaped uterus. It also makes it easier during childbirth if the baby comes out head first. http://whattoexpect.co.uk/pregnancy/pregnancy-calendar/week-32-of-pregnancy-foetal-position/