The baby floats around in the womb for the first seven days of its life. The fetus is not yet fully formed and cannot breathe until the birth. The lungs are filled with fluid and the fetus is covered in amniotic fluid. By 10 to 12 weeks gestation, the fetus starts taking practice breaths. These breaths do not provide oxygen, but instead refill the lungs with more amniotic liquid. Therefore, babies can not drown in the womb.
The first week of a baby’s life is the most important. The fetus’s development begins at approximately five weeks gestation. At this stage, the embryo is just the size of a grain of rice. By six weeks, the organism consists of 100 cells and two types of tissues: an inner group of cells that will become the embryo, and the outer group will become the trophoblast, which will act as a support system for the developing organism. During this week, the embryo is about three to five millimeters in length and has developed a placenta, which burrows into the uterine wall.
After eight weeks, the fetus is considered to be fully formed. This stage allows the fetus to move around. By the end of the first week of gestation, the fetus is about one inch long and weighs 1/3 of an ounce. By this stage, the baby can open his or her mouth and fists. At this time, the fetus has developed the beginning of teeth and reproductive organs. Although the eyesight of a newborn is not developed, the baby has developed well.
This is a crucial time for a baby’s development. The fetus is now seven cm long, and measures 0.6 to 0.7 inches (16 millimeters) from crown to rump. During the first week of pregnancy, the baby is still growing and developing. The baby’s muscles are strong and the lungs are forming rapidly.
In the first week of life, the fetus grows from around two to eight inches. At this stage, the placenta is developing and the baby’s sense of smell is developing. The fetus is not yet fully developed yet, but the brain has already begun to develop. The heart begins beating at the end of the seventh week and will grow until the baby reaches the fourth week of life. http://www.aytoloja.org/jforum/user/profile/213031.page
By week seven, the baby’s eyelids are already fused to protect the baby’s eyes. It may be able to place a thumb in its mouth, but it is still too early to detect the baby’s sucking reflex. At this stage, the baby can even move his or her legs and arms. It is a very exciting time for parents.
During the first week of life, the baby floats around in the womb. Its placenta helps the baby breathe in the womb. The baby’s blood is oxygenated and contains carbon dioxide. The oxygen that the mother’s blood carries to the baby is transferred to the baby through the placenta. By this time, the fetus has also developed the reproductive system. Both the mother and the father have a uterus and ovaries.
By day 20 of the pregnancy, the baby’s heart begins to pump fluid through its blood vessels. By day twenty, it is able to poop in the womb. This is the time when the intestines will begin to move to the baby’s abdomen. A baby’s brain, spinal cord, and heart will begin to form. The first seven days of life are the most exciting of all. https://www.themehorse.com/support-forum/users/babynamesdiary-com/
After this week of development, the fetus continues to mature and is almost twice as large as an adult. It is surrounded by amniotic fluid, but the uterus can only hear the heartbeat. By the end of the seventh week, the fetus is already about 14 inches long and weighs two to four pounds. It will have developed nerve endings in the middle ear.