The development of the child in the womb is truly a bewitching and unique process. In just nine cells, a full-fledged child is formed within nine months. And mom, who counts on the calendar every week, is interested to know, what is he like now, her baby? Pregnancy by week, the development of the child, what is happening to him now is what interests her.
Pregnancy by week. Development begins. First trimester.
1. By the end of the first week, the embryo of just a few cells turns into a clot from hundreds of cells and resembles a bubble.
2. The back of the embryo becomes thicker, the laying of organs begins.
3. The first nerve cell appears and a heart tube is laid.
4. There is a further laying of organs: kidneys, intestines, bones, liver, ears, eyes, makings of the skin appear. The heart develops, its structure is already more complex.
5. Pens appear, similar to fins, rudiments of the tongue and lungs. And most importantly - from the fifth week the heart begins to function!
6. The shape of the head of the embryo, its feet and hands takes on shape . The circulatory system begins to work.
7. Stand out chest and tummy. Fingers appear on small pens. The organs are becoming more perfect. The size of the embryo is 10-15 mm.
8. A face is formed. The head is large, equal in size to the body. All organs are finally formed, and some have already begun their work. The genitals of boys and girls are already different. The embryo is 25-30 mm long and weighs 13 grams.
9. The face is fully formed. Now this is not an embryo, but a fetus, its length is 30 mm.
10. The formation of the skeleton begins. The eyes and mouth are distinctly distinguished, a tongue is formed. It is believed that from the tenth week the fetus begins to feel the mood of the mother.
11. Genitals are clearly distinguishable, which can be easily seen on a good ultrasound machine.
12. The fetus floats in amniotic fluid, the umbilical cord is developed and delivers nutrition and oxygen to it.
Pregnancy by week. Development in the second trimester.
The most difficult is the first trimester behind, many threats have passed, new stages of pregnancy begin in weeks.
13-14-15 week. The fetus begins to move! The pens are already big enough and touch each other. The skin is very thin, blood vessels are visible through it. Fruit length 10 cm.
16. Active growth occurs, the size of the fetus is already 15 cm. Gripping movements and sucking of the finger begin. The muscular system is formed.
17-18-19 week. Mom feels movement, the fetus is already 20 cm long and weighs 250 g. The skin is covered with a light fluff, subcutaneous fat begins to be deposited.
20. In the intestine, primordial stool - meconium is formed.
21-22. The kid is not so wrinkled anymore, eyebrows and cilia appear. At this time, sounds begin to reach him.
23. Hair appears. Length 30 cm., Weight about 600 g.
24. The reaction to the touch of the mother is detected, he hears her voice. The organs are developed enough to start an extrauterine life (only in very good and adapted conditions).
Pregnancy by week. Development in the third trimester.
25-26. The eyes begin to open slightly. Reacts to sharp sounds and a change in the mother's posture with active movements.
27-28. Sometimes the fruit hiccups. A baby born at this time has every chance to survive. Its length is 35 cm, weight is about a kilogram.
29-30-31. The kid turns head down. He is not as wrinkled as before. The skin is red.
32-36 weeks. The baby is not red, but pink, the skin is smooth. Hair grows, marigolds lengthen. At birth, the lungs straighten without medical attention, the baby screams loudly.
37-40. Development ends. The length of the child is about 50 cm, average weight 3500 g. This is a fully formed baby with well-defined reflexes, ready for birth.
This is the answer to the question: "How is pregnancy proceeding by week?" A wonderful process of transformation, evolution and development of a new life.