Stages of child development in the womb from conception to birth
Both animals and man have the same mode of reproduction. Women, like females, produce an egg, men, like males in nature, are spermatozoa. The fetus occurs when the ovum is fertilized with a sperm cell. In addition, that each species is reproduced for the continuation of the genus, nature has made the fertilization process a pleasant process.
Breeding organs in women are at the level of the pelvis, in the lower part of the abdomen. The uterus of a woman, a common and common name - the womb, is a muscular organ, about fifty by forty millimeters in size, weighing up to fifty grams, located in the center of the genital organs. Uterus resembles a pear-shaped form and connects with the beginning of the vagina with its narrow part. The lower part of the uterus ends with the inner opening of the cervical canal.
The upper part of the womb is continued by two tubes directed in different directions in length about 7-10 centimeters. Each tube at the far end from the uterus ends with a cavity in the form of a bell, at the base of which the ovary is located. At the base of each of the two ovaries is the oviductive tissue.
Monthly the egg ripens in the cavity and approximately 10 days after menstruation moves to the uterus along the tube from the ovary. At the same time, a convenient lining is formed in the uterus so that the egg can be fertilized. If the process of fertilization of the egg does not occur, it passes through the uterus and goes outside. After about 2 weeks, a special prepared pavement is also thrown out, and a new egg is formed for fertilization of the next egg. This process of leaving unused material we used to call menstruation.
To the male reproductive organs are the testicles, which are before the birth of the boy at the level of his lumbar vertebrae, but by the time of birth take their place in the scrotum. In the testicles, sperm are formed. Scientists have calculated that a healthy man can throw out more than 200 million spermatozoa per ejaculation, and sperm-producing fibers of one testicle can make up about 1 mile or 1609 meters long.
During sexual intercourse, male sperm erupt into the vagina of a woman through the urethra. The advancement of the mature spermatozoon to the opening in the cervix provides its long tail, which, wriggling, moves the body of the sperm and develops a speed of up to 3 mm per minute. The fastest spermatozoa are sent through the cervix into the uterine region, rushing to the pipes with the main goal - to fertilize the egg. As soon as the fastest spermatozoon reaches the egg, it fertilizes, while changing its shape immediately and becomes inaccessible to the remaining spermatozoa
The fertilized egg moves to the uterine cavity through the tube, is fixed on the wall and begins its development. The special lining changes, transforming into a placenta, forming a child's "nest", and is a direct channel for feeding the fetus. The placenta begins to develop rapidly, expanding and becoming a placental area, nerve fibers, blood vessels are formed - the development of the child began.
After a short time after the fertilization of the egg cells differently shaped cells begin to form, which soon will represent the parts of the baby's body and its organs. Already at that time the sex of the future child was laid.
Being in the womb, the child lives in a water bubble, which protects the fetus from accidental damage (if the mother, for example, strikes something). In addition, water provides a constant temperature and free space, sufficient for the movement of the fetus, until the moment of birth.
Development of the fetus occurs very quickly. After a month, it grows to 4 mm and is in a small liquid-filled bladder, about the size of a pigeon egg. And a month later, the fetus grows to 30 mm and it is already clearly possible to distinguish its parts of the body - the head, arms, legs. At this time the future child has his own nervous system and circulatory system.
Fetal nutrition in the womb is carried out through the umbilical cord, connected with the placenta. The placenta, located on the inside of the uterus, as a filter, separates the necessary substances from the incoming blood of the mother to the child and blocks, detains harmful substances. Amazing nature! And by the time the baby is born, the umbilical cord can reach from 30 cm to 100 cm.
The length of the fruit by the end of the third month reaches 9 cm, and the weight is about 30 grams, after another four weeks the length is 18 cm, and the weight of the fetus is about 120 grams. At this time, intensive work of the heart is noticed and it is even possible to determine the sex of the future child. The movement of the fetus becomes more tangible. Usually, these more palpable movements become noticeable 18-19 weeks after fertilization.
By the fifth month of development of the fetus, its length reaches 25 cm, and its weight is about 700 grams. There are cases described in medicine when the children born in this period survive. 28 weeks after conception, by the end of the 7th month the fetus is considered to be a fully developed being. Already considered ordinary and not surprising, when children are born at this time and survive, despite the underdeveloped mass.
By the eighth month the length of the child is 44 cm and is very suitable for development, although special care is required for such newborns. After 36 weeks, at the 9th month the baby weighs about 2.27-2.50 kg, his organs are functioning and well developed, but nevertheless, he needs close attention, since it is considered that the full term of a full-term child is 10 months.
The normal weight of the child at the 40-week development period of the fetus should be 3.2 -3.4 kg, and its height - about 48 cm. At this stage, natural birth takes place.
We gave a short description of the stages of the child's natural development in the womb, without taking into account external factors, such as: environmental impacts, genetic characteristics, diet, emotional state of parents, both during conception and during gestation. All these factors greatly influence the development of the fetus. It is impossible to follow everything, but parents who are consciously involved in the development of their child must create all the optimal conditions. These include: attention to one's health not only during the period of gestation, but also before the conception of the child, and also care for the equal psychological health of the mother. Premature births occur not only for physical reasons, but also as a result of violent worries and anxieties. Therefore, it is not for nothing that they believe that for the healthy development of the child in the womb, it is important to maintain the normal state of both the physiological and psychological environment simultaneously.