12 week of pregnancy
On the 12th week of pregnancy to future child 10 weeks from the moment of fertilization are executed. The first trimester of pregnancy comes to an end, by this time at a fruit all bodies and systems are formed already, they continue to develop and be differentiated.
Changes of a fruit
The fruit size on the 12th week of pregnancy in length makes up to 6-7 cm, weight reaches 12-14 g. By sight future kid thin and disproportionate – the head size still makes the most part of its length.
In 12 weeks of pregnancy work of nervous and muscular systems is well coordinated – the fruit makes various movements in mother's womb. For example, facing a uterus wall, he makes a start from it, pulls faces, squeezes cams and sucks fingers of hands. Mother does not feel these gestures because future child is still too small.
Intensively sense bodys develop – the fruit in 12 weeks of pregnancy is capable to react to light (turns away from bright sources), to feel taste of amniotic waters.
Bones begin to ossify and become firm, on fingers there are no membranes. On fingers of hands the skin drawing which will define further uniqueness of fingerprints of the person begins to form.
As a part of blood cells of the person on the 12th week of pregnancy there are except erythrocytes leukocytes which are responsible for immunity and healing of fabrics.
Ultrasonography on the 12th week of pregnancy will show how heart cameras, and also a fruit floor are reduced. However, future kid not always shows the generative organs during the research, crossing legs among themselves.
On the 12th week of pregnancy the volume of amniotic waters quickly increases. If on the 10th week it made only 30 ml, then in 2 weeks their quantity increases almost twice. Amniotic waters perform a number of the major functions on maintenance of a metabolic equilibrium and gas exchange of a fruit. From the moment of formation of a placenta the main part of waters is made by a plasma filtrate of maternal blood.
Changes in the woman's organism on the 12th week of pregnancy
From the term of 12 weeks of pregnancy the woman's weight constantly begins to increase. Till this time normal the general increase of weight should not exceed 3,5 kg.
Load of cardiovascular system and the pregnant woman's kidneys continues to increase.
On the 12th week of pregnancy of the phenomenon of early toxicosis normal pass, and the health considerably improves.
To new feelings can increase an itch in a breast, hips and a stomach. On face skin there can be first nevus pigmentosus and vascular asterisks which will disappear after the delivery.
The stomach on the 12th week of pregnancy begins to increase in sizes. More intensively this increase happens in case of polycarpous pregnancy. The uterus gradually leaves a cavity of a small pelvis, reaching a pubic joint. The pregnant woman in this regard is tormented by locks and the speeded-up urinations less often.
Pains on the 12th week of pregnancy disturb less, the placenta works at full capacity and risk of an abortion at observance of recommendations of the doctor minimum. But in case of bloody allocations on the 12th week of pregnancy the probability of its interruption is high.
Inspection on the 12th week of pregnancy
On ultrasonography on the 12th week of pregnancy it is possible to assign gender of future child. However, carrying out inspection on the modern and high-precision equipment for this purpose is required. Besides, ultrasonography specifies duration of gestation, reveals rough malformations. Blood test on alpha-fetoprotein which shows a possibility of chromosomal anomalies of a fruit is dated for this inspection. Its carrying out at women is especially necessary 35-40 years are aged more senior.
Also during another visit to the doctor the pregnant woman makes the general test of urine.
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