It is essential that the woman know when she learns the news of her pregnancy the most important developments that get the fetus in her womb, because it is responsible for monitoring the fetus and follow the evolution that occurs as a note movement, for example, and it is known that the stages of pregnancy is divided into forty weeks, and we will show here the most recent developments on the Fetus week by week. It is calculated from the first day of absence for the menstrual cycle, which is important to determine because it gives us an indication of the expected time of delivery.
Stages of fetal growth in weeks
In this article, we remind you of the stages of fetal development in order of weeks, as follows:
- If your cycle is regular every 28 days, the egg production will be around the 14th day. The egg remains alive for 12-24 hours after it is released from the ovary, so fertilization is done at this time.
- After fertilization, changes occur on the egg to prevent the entry of another sperm. There is a correlation between the genital material in the sperm and the genital material in the egg, resulting in 23 pairs of chromosomes.
- The egg itself is implanted down the fallopian tube in the wall of the uterus. The size of the uterus increases. In the fourth week, the embryo’s cells grow into a three-layer disc in a very small amniotic sac.
- The fetus is about half a centimeter long and produces a number of chorionic stimulants, which in turn stop the menstrual cycle.
- The heart of the fetus beats and the umbilical cord, fingers, nostrils, ears and eyes are formed, and is 2 cm long.
- The embryo’s heart is made up of two parts, left and right, and its size is 11-13 mm.
- The main organs, internal organs and limbs are completed, fetal length reaches about 20 mm, and feeds from the placenta.
- The child weighs up to 4 grams, and his arms, legs and neck grow significantly, and is 22 – 30 mm long.
- The size of the baby is similar to the size of the strawberry fruit, and starts with breathing movements.
- The fetus becomes 5.8 cm long and begins to perform swallowing, sucking and yawning movements, and pumping blood to the body.
- He can extend the fingers of his hands, the length of the fetus is 61 millimeters, and we can hear his heart beats clearly, and complete the main organs of the fetus.
- Can hear the sounds, and the length of the fetus of 65 – 78 millimeters.
- Begins to move his arms and legs, and the size of a small finger at this stage, and determine the sex of the fetus male or female.
- The length of the fetus reaches 10.5 cm, and is the size of the palm, and the bones become more rigid.
- Eyelashes and eyebrows are formed, up to 12.5 cm in length.
- It becomes taller and heavier, and has a length of 1205 cm.
- Lashes are formed and accelerate growth.
- It is about 17.5 centimeters long, and here its nervous system grows.
- It is 14 to 16 centimeters long and has layers of skin.
- The weight of the fetus increases by half a kilogram weekly.
- It works in the digestive system, and reaches a length of 19 centimeters, and the formation of his eyebrows.
- It is about 20 centimeters long, and the baby’s kicks become stronger towards your ribs.
- It has a tooth length of about 21 centimeters and has tooth roots under the gums.
- He can hold his feet and catch his hand, and his brain begins to form.
- It is covered with a waxy layer, to protect its body, and the growth of its muscles is completed and increased.
- It can weigh up to a kilogram, and it can open its eyes. In the 28th week, the fetus can control its body temperature, and it is 36 cm long.
- The embryo is small, but full body, and a length of 25 centimeters, and the head becomes suitable for the size of his body.
- The fetus weighs 3.4 kg.
- Have the ability to stare and move in a consistent way.
- Start moving 10 times in four hours.
- Is now considered complete, but it takes a little time to increase its weight more.
- The lungs continue to grow because they are not yet complete.
- Some point out that your fetus is aware of things and responds to certain tones.
- It is hard to move; the place has become narrow and may place its head down the pelvis in preparation for the birth, and it is now 47 cm long.
- The lungs are fully developed, and can breathe out of the womb, weighing 3 kg.
- The fetus is ready for delivery, and weighs up to 3.15 kg.
- The fetus becomes in the birth position.
- The mother is ready to give birth, where the fetus has reached the largest volume it can reach.