Baby Inside The Womb - Pregnancy : Week by Week | 3D Animation

After fertilization, the blastocyst undergoes the great divide, splitting into two bundles of cells. The inner bundle will become your baby, while the outer bundle will burrow deep into the wall of the uterus to become the placenta. Your baby is elongating from a ball of cells to a tadpole-like shape. All the major and minor systems and organs have to form from scratch. At this week, a primitive heart begins to form. A tube extending from the mouth to the tail of the embryo, and this tube will eventually turn into the stomach, liver, pancreas, esophagus, and intestines. The head are developing into your baby's jaw, cheeks, and chin, which will eventually become one adorable face. Small dots on the face will form the eyes and button nose in a few weeks. Your baby's kidneys, liver, and lungs, along with the little heart, are taking shape at this week. Your baby is starting to look a little bit cuter, with dark spots that'll become eyes, two holes that will turn into nostrils, the beginning of lips. The limb buds are elongating and will soon become defined shoulders, arms, legs, and knees. The little paddles at the ends are becoming more distinct and will soon develop into tiny fingers and toes. Nerve cells are multiplying and connecting with each other's. They will later transmit messages from the brain to the body. Newly developing cartilage and bones are starting to form. Tiny fingers and toes are just starting to differentiate. The placenta will keep supplying your baby with nourishment and oxygen via the umbilical cord. The diaphragm is nearly fully formed, the liver, spleen, the gallbladder are all under construction now and in a short time will be fully formed. Your 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. Your baby's eyes are hidden behind sealed lids and won't function until later in the second trimester. Baby's stomach and kidneys are operational now, churning out digestive juices and urine. The arms, complete with elbows, can flex already. The heart is now fully functional with four chambers. Two ventricles pump blood to the lungs and body while the two atria receive blood from baby circulation. And now the baby's head has some distinctly human features with ears now sculpted into their final shape, open nasal passages on the tip of the nose and a tongue and palate in the mouth. Fingernail and toenail beds are developing and nails will actually start forming within the next few weeks. Your baby's thyroid starts to work on its own. The pituitary gland has started producing hormones and the pancreas has begun to synthesize insulin. Your baby's body has to catch up to the head which still makes up half of your baby's crown to rump length. The placenta is expanding more rapidly to nourish that tiny tummy and the other systems and organs. It weighs around two ounces now and soon at delivery it'll be around 24 ounces. At week 14, your baby is growing and developing rapidly, measuring between three and a half and four inches long and weighing around two ounces, about the size of a navel orange. By now the ears are positioned properly on the sides of the head and the eyes are moving from the side of the head to the front of the face. At week 16, thanks to those developing facial muscles, your baby is capable of making a few facial expressions even at this early stage. The chin is still small and mouth is wide. In comparison, the eyes are huge, closed and spaced wide apart. Body fat is just starting to form with skin that's practically translucent. Your baby is sharpening his sucking and swallowing skills in preparation for that first and second at breast or bottle. Baby's heart is now regulated by the brain at 140 to 150 beats per minute. At week 18, your baby's nervous system is maturing rapidly and those in the brain are further developing into the ones that serve the senses of touch, taste, smell, sight and hearing. Myelin also helps baby's nerves on some perfect moves such as thumb sucking, hand clasping and curling fingers around the umbilical cord. Baby's legs are finally in proportion to the arms. Those longer legs will make your little ones jabs and kicks more powerful. The newly formed neurons are sending better coordinated messages from the brain to the muscles which lead to more powerful and controlled movements. At week 20, you can easily determine the sex of your baby whether male or female. At week 21, your baby is swallowing amniotic fluid each day for hydration, nutrition and just for practice. Neurons are now connected between the brain and muscles and cartilage throughout the body is turning to bone which means they're much more coordinated. Your baby is making more control as developing the sense of touch. The grip is quite strong now and since there's nothing else to grab in uterus, the baby may sometimes hold on tight to that umbilical cord. Your fetus can now perceive light and dark much better than before even with those fused eyelids. He can also hear your voice, your heartbeat, your gurgling stomach. At week 23, your baby's organs and bones are visible through the skin. He will become less transparent once those fat deposits settle in. The lungs are maturing slowly and pneumocytes are developing too. These cells will produce surfactant that'll help the baby's lungs expand after birth. The placenta transferring oxygen and nutrients to your fetus and removing waste products. It also produces estrogen and progesterone that keep your pregnancy going strong. At week 24, your baby is developing its own waking and sleeping patterns. Your baby's face is almost fully formed, complete with a full set of eyelashes and eyebrows and a good sprinkling of hair on that little head. At week 25, the baby's skin color is currently taking on a pinkish hue, a sign that the fetal vascular system is maturing. The fetus actively practices breathing, inhaling and exhaling amniotic fluid. When too much amniotic fluid is swallowed, you may feel a hiccup. Those little eyes which have been closed for the past few months so that the retina could develop are beginning to open at week 26. That means your baby is able to see what's going on now, although the view in your uterus isn't all that exciting. With every gulp of amniotic fluid, your baby can taste different flavors and sometimes will react to them. The baby respond to spicy food by hiccup or kicking. Your baby may recognize the voices by now. Your husband might be able to hear the baby's heartbeat by pressing an ear to your stomach. Baby is busy these days blinking. It's necessary to help keep foreign objects out of the eyes. The baby is working on many skills like coughing, sucking, hiccuping and perhaps better breathing. Dreaming about your baby at 28 weeks pregnant? Your baby may be dreaming about you too. Brainwave activity measured in a developing fetus shows different sleep cycles, including the rapid eye movement phase, the stage when dreaming occurs. As more fat is deposited under the skin surface, the baby's wrinkled skin is smoothing out. Brown fat is necessary for body temperature regulation, while white fat actually serves as an energy source. The baby's head is an ever-growing, fast-developing brain which is preparing for life outside the womb and for lifetime learning. Now that baby's brain and new fat cells are regulating body temperature, the lanugo hair, that soft downy hair covering your little bean's body is beginning to disappear. Your baby may not be able to smell too much right now. The brain is working overtime these days, developing faster than ever. He's now processing information, tracking light and perceiving signals from all five senses. Your baby's major organs are fully developed now, except for the lungs. He continues practicing swallowing, breathing, kicking and sucking skills. Preparing for mouth feeding, your baby's digestive system is all set and ready to go. With that much baby inside your uterus, the amniotic fluid level has maxed out. This is why some of his pokes and kicks feel pretty sharp these days. The vernix covering the skin has become thicker. Lungs are almost fully developed and the fetus will be practicing breathing in preparation for birth. At week 34, the testicles are making their way down from the abdomen to the scrotum. About three to four percent of boys are born with undescended testicles, but that's nothing to worry about. They usually make their trip down south before the first birthday. Brain development continues at a mind-boggling pace, making your brainy bundle a little on the top-heavy side, thanks to the soft skull that will allow your baby to squeeze more easily through the birth canal. Your baby's skinny arms and legs are now quite plump and irresistibly, squeezably soft. Don't be surprised if the shape of your baby suddenly changes from time to time. The nervous system is maturing and the fetus is getting ready for birth. Your baby's nutrition has been arriving via the umbilical cord. No digestion necessary, but that's soon to change. At week 37, your baby is rehearsing for his big debut, simulating breathing by inhaling and exhaling amniotic fluid, sucking his thumb, blinking and pivoting from side to side. At week 38, all systems are almost go. As you prepare for baby's delivery, the baby is getting ready too by shedding Vernix, the greasy white substance protecting that tender new skin and lanugo hair, the fine downy hair that cover your baby for warmth. The lungs are still maturing and producing more and more surfactant, a substance that prevents the air sacs in the lungs from sticking to each other once your baby starts to breathe. The baby's brain is still growing at a phenomenal speed for the first three years of your baby's life. With changes, you'll be able to recognize firsthand as your baby's skill-packed bag of tricks expands almost daily. Your baby's skin has now finally changed from pink tinted to white. That's because a thicker fat layer has been deposited over the blood vessels, making your baby's cheeks pinchably and kissably round. At week 40, the pregnancy journey is almost over. Your little baby is now fully loaded with fully functioning organs. All the systems and reflexes are ready to start a new life outside the uterus. Congratulations! You are a new mother. After completing our pregnancy journey, tell us in the comments which week of pregnancy you are in it this week. If you like the 3D medical animations, don't forget to subscribe. Thanks for watching!