Medical blog

Pregnancy first signs (them presumable signs name) concern: change of appetite and taste of food, an aggravation of sense of smell, occurrence of a nausea and sometimes vomiting in the mornings; change of state of health and mood (weakness, an indisposition, irritability or drowsiness). Some women to whom has already had the luck to be pregnant women, define pregnancy approach to any specific signs.
Probable signs concern the termination , occurrence white (colostrum) from a nipple at pressing, change of genitals at research (cyanosis of a vagina and a uterus neck, uterus change). Clearly, as these signs cannot be completely authentic as, for example, the delay can be a consequence of psycho-emotional excitements, inflammatory diseases of appendages of a uterus, physical overfatigue, strong growing thin. Besides, in the first month of pregnancy can be small allocation in time expected , that can be regarded as usual . Occurrence from a mammary gland also can be in some cases out of pregnancy, for example, at and disease — .
Authentic signs of presence of pregnancy are defined much later. Authentic signs of pregnancy concern the ultrasonic image of a fruit, a fruit, auscultation of palpitation of a fruit.
And nevertheless at uncharacteristic sensations for itself and absence it is possible independently to try to define pregnancy.
1. On to temperature. If the temperature above 37 — is probability of pregnancy.
2. In drugstores special tests for pregnancy are on sale. Tests, as a rule, are used in 3 days expected, but not come pregnancy. For reliability it is necessary to repeat the test 2 times. At the heart of such diagnostics reaction to the specific hormone developed already in the beginning of pregnancy — and products of its disintegration which are allocated with urine lays.
What to do further? The answer is simple — go to the doctor of female consultation or your personal accoucheur-gynecologist. He will precisely tell, that with you.
Try to be registered on pregnancy as soon as possible is will give the best chance to give birth to the healthy kid.

Development of a fruit since 14th week
By 12-14th week of pregnancy the placenta is well enough generated and all bodies and fruit systems are put in pawn. With this moment begins the period. The germ is surrounded by waters and three covers, two of which are fruit ( and ) and one — parent . The fruit to a placenta is connected by an umbilical cord in which there pass two arteries (on them blood «with a waste» from a fruit to a placenta) and one vein flows (on a vein to a fruit the blood rich with nutrients and oxygen) flows.
or the period proceeds on the average about 28 weeks. Since this moment the germ which till this moment was called as an embryo, becomes a fruit. During this period there is a growth and development of all bodies, their functional maturing, the sizes of all fruit intensively increase.
Fruit supply by necessary nutrients (nutritious function), by oxygen (respiratory function) and removal of unnecessary products of an exchange (secretory function) are carried out through a placenta, or a children's place. By the end of pregnancy the placenta has diameter of 15-18 sm, a thickness of 2-3 sm, weight of 500 600
Also the placenta is original gland functioning during pregnancy: it allocates a complex of hormones and biologically active substances necessary for correct development of pregnancy.
The placenta carries out as well protective (barrier) function. It is capable to detain transition to a fruit of harmful products of an exchange of mother, and also the substances which have casually got to its organism. However fruit protection is carried out by a placenta in the limited limits: through it easily there pass alcohol, drugs, the nicotine, some medical products, activators of infections (a virus , a current-soplazmy, etc.).
At decrease in functions of a placenta, its anomalies the fruit suffers. Then speak about placentary to insufficiency.
(or the water cover) is the cover nearest to a fruit and contains the waters which volume in norm by the pregnancy end makes 1 — 1,5 litres. It carries out protective function and is environment in which the fruit develops and makes movements.
Fruit covers ( and ) together with a placenta and an umbilical cord make .
Pregnancy on the average proceeds 280 days or 40 weeks. During this time from impregnated the mature fruit capable to out of-uterine existence develops.

The period of development from the moment of fertilisation of a female sexual cage (the pregnancy beginning) till a birth of the child is called as pre-natal.
The first stages of development pass during movement on to a pipe. Impregnated starts to share, therefore it is formed , superficially resembling a mulberry berry. At this stage for 4-5th day impregnated gets to a uterus where turns in . In a stage for eggs that a part of cages, larger on the sizes, form from which the embryo further develops is characteristic, and other part of smaller cages located outside of egg, forms feeding cover of a germ — .
For 7-8th day , consisting approximately from 100 cages, takes root it (is implanted) into a uterus wall. has enzymes thanks to which there is "fusion" of cages of a mucous membrane uterus walls, and gradually plunges into depth of a functional layer .
After implantation (inoculation) of a germ in a uterus wall the responsible period of formation of the basic bodies and fruit systems, and also the important body of pregnancy — placentae begins.
Implantation comes to the end within 40 hours. After implantation the uterus mucous membrane is called (disappearing) cover.
egg quickly grows, thus there is a development both the germ, and its covers by which it is surrounded. From an inside layer of the cages surrounding a germ, the cover which is called is formed. From the external cover eggs which is called (a fleecy cover) develops. in the beginning have no vessels. Gradually there is a formation of vessels : germ vessels grow into it . It provides more intensive metabolism between it and an organism of mother. On 2-3rd month of pregnancy reduction on one party the eggs turned into a uterus cavity, and on other party shipped in a mucous membrane of a uterus, expand begins. Thus, shares on smooth and branchy. In the beginning of 4th month of pregnancy the branchy part turns to a fruit part of a placenta. Besides , making the basic part of a placenta, in its formation takes part
1st week fertilisation
4th week and further embryo development
3rd week
2nd week formation of three germinal covers of which various bodies of the kid further are formed

Uterus cover (parent part of a placenta).
On 3-4th week after conception the nervous system is pawned, its heart starts to work, there is a bookmark of internal bodies: lungs, a stomach, a liver, glands. There are rudiments of eyes and ears. Placenta formation begins. The umbilical cord through which to the child nutrients and oxygen will arrive is formed, and to leave products of its ability to live.