7 weeks of pregnancy. Development of the fetus

At 7 weeks of pregnancy, the fetus still has a small tail, and its head is very large compared to the body. The eyes are located much closer to the bridge of the nose, eyelids are being sighted, a pigment appears in the retina of the eyes and a so-called iris is formed. The embryo is already not in such a bent state, gradually straightening up. Forearms and shoulders are formed, and fingers and pins are visible on the legs and arms. The fruit can independently bend the tiny hands in the wrists and elbows. The upper lip is formed and the nostrils are in the nose. Also in 7 weeks of pregnancy, the outer and inner ear is formed.

Progress in development occurs with internal organs and systems. So, a small heart of a crumb already has a left and right atrium, and at the end of 7 weeks of pregnancy, his heart will become a 4-chamber. Along with all these changes, the vascular system progresses in development as well - large blood vessels are formed. The heart is still in the center of the sternum, but very soon it will be in its rightful place.

The brain of the baby already has two hemispheres, and the complex formation of its five departments begins. At the same time, the nervous system does not diminish the rate of development, although in general it can already be considered formed.

Between the fetus and the woman, it is at 7 weeks of pregnancy that the utero-placental exchange is established, since the umbilical cord is completely completed. Now the baby depends entirely on her mother, eats and breathes only thanks to the substances entering into the female blood. The placenta becomes denser gradually, its full maturation will come to 12 weeks of pregnancy. This week also forms the so-called slimy plug, which serves as a kind of barrier between the outside world and the world of "puzozhitelya." By the way, one of the main precursors of childbirth is the departure of this very mucous plug, it occurs shortly before the birth of a baby.

The bone system begins to form, and the epidermis also forms. The fetus on the 7th week of pregnancy has a completely formed liver, bile ducts, appendix and large intestine. Endocrine glands, intestines, kidneys and lungs continue to develop. His first insulin this week will begin to produce the pancreas.

This week the final sexual identification takes place: the sex glands begin to turn either into testicles or into the ovaries. The perineum still remains convex, in the future from it sexual organs are formed. But while ultrasound is still possible to determine the sex of the child.

The baby, compared to last week, has grown considerably, its size is approximately 13mm. But at this time, the threat of miscarriage still exists, so you should take care.

The abdomen at the 7th week of pregnancy is rarely changed in size, as it is not yet visible at such a short time, but of course there are exceptions. But a dark line appears on the tummy and painful sensations in the lower abdomen and on the sides are possible, this is due to the growth of the uterus.

It's time to get registered. It is necessary for the clinical examination to pass the tests. If a pregnant woman has endocrine dis- eases, then a consultation with a specialist is necessary.
The volume of blood at this time greatly increases, so stagnation in the legs and swelling are possible. Sometimes a pregnant woman has a feeling of lack of oxygen, loss of consciousness is possible.

Early toxicosis is manifested even more strongly. The future mother becomes more irritable, tired, sleepy, more frequent rest is required, because her body works tremendously. We should not forget to take vitamins and eat fully, giving preference only to healthy food. In the diet should not include fatty, sharp and salty foods. We need to move more and walk in the fresh air.