Pregnancy - How a Wonder is Born!How Baby Grows in The Womb - 0 to 9 Months Journey

Men, and especially women possess various organs that are optimally suited for the creation of another human being.The ovary possesses about half a million eggs embedded in follicles, several follicles, and therefore eggs mature in each cycle. The dominant follicle grows to about two centimeters and the fimbriated in the other fallopian tube, which eventually catches the egg moves to the site of ovulation. The egg consists of an outer layer called the corona Radiata. Underneath is another protective layer, the Zona Pellucida both layers must be penetrated by the sperm cell in order to reach the cell nucleus that contains 23 different chromosomes. Each chromosome contains DNA. DNA is the blueprint for building our body cells, eye color, body size, arrangement and function of our organs. It's all in there if two identical chromosomes occurred one cell, we can later speak of trisomy. The egg cell is transported inside the fallopian tube with the help of cilia and mucus produced by glands in the walls of the fallopian tube. Additional contractions of the muscle layers helped to transport the ovum. At a speed of about three to four millimeters per minute, something else makes its way from the other side of the fallopian tube, sperm cells 1000s of them and barely visible, they all have only one goal, reaching the ovum. A sperm cells nucleus contains the male's genetic information through messenger substances emitted by the egg cell, the remaining sperm cells find their way to the Oval. The goal of all sperm cells is to penetrate the two outer layers to reach the chromosomes. sperm cell penetrates Corona Radiata and Zona Pellucida, resulting in the degradation of the acrosome cap. Upon entering the cytoplasm, fertilization occurs resulting an activation activation causes, among other things, a structural change of the Zona Pellucida so that no further sperm can penetrate. In addition, activation causes the ovum to complete a second maturation division. In this process, the sister chromatids are pulled into opposite poles and a female pro nucleus and a polar body are formed. The sperms tail and head gradually degenerate into cytoplasm. The condensed sperm nucleus rapidly increases enormously in size and a chromatin D condenses. Thus, a mailpro nucleus is formed with 23 unreplicated chromosomes that possesses the genetic information of the Father as to two pro nuclei approach both doubled their DNA resulting in replicated chromosomes. Finally, sink of me occurs in wish to pro nuclei dissolve, and the chromosomes of male and female are properly aligned into spindle apparatus. Now, the cell is called a zygote, which is the very first cell of the new human being the stage of cleavage begins. In this process, the cell continues to divide to cells, then four, then eight. At a 16 cell to 32 cell stage embryo we speak of a Muralla. Since the shape resembles a Mulberry, the cells are still enclosed by the Zona Pellucida. Thus, after each cell division, whilst the number of cells increases, the size of each cell diminishes. Finally, the blastocyst is formed. The blastocyst consists of a fluid filled cavity, the cells of the embryo blast and a truffle blast. The embryo blast is the initial structure of the new human being, whereas the trophoblast is the origin of placenta and membranes. Let's see the individual stages in the fallopian tube. fertilization occurs at the end of the tube. The first cell division takes place about a day after fertilization. Eventually, further cell divisions have been forming the Moorilla. And in the uterus, the blastocyst is created. At this stage, the mucous membranes of the uterus or womb has already been prepared for the implantation of the blastocyst, usually, the blastocyst implants in the posterior wall of the uterus. However, implantation can also occur on the side, as we will see in a moment the blastocyst floats into protective and nourishing uterine mucus for implantation in the uterus, the blastocyst must first hatch from a protective Zona Pellucida. Then the blastocyst beryls further and further into the uterine lining, like a parasite. Let's take a closer look at this. The endometrium has a protective epithelium and capillaries filled with blood as well as mucus producing glands. The trophoblast cells fuse with the endometrium and assin central trophoblast is formed that were Noris the embryo. In addition, hypo blasts and epiblast arise from the embryo blast. The embryo burrows further into the endometrium, rapidly increasing in cell mass and leaving a wound which may result in a completely harmless implantation bleeding. Finally, the amniotic cavity is formed as the process continue Use the yolk sac is created, as well as a non cellular plug that is later sealed by migrating uterine epithelial cells. The trophoblast rapidly increases in size with the amniotic cavity and yolk sac remaining relatively small. This gives rise to the chorionic cavity and the body stock. Three germ layers formed from the primitive streak and node, this process is called gastrulation. The germ layers ectoderm mesoderm and endo DERM eventually differentiate into various tissues and organs. In the course of the third week of development, no relation occurs. At that time, the foundation for the central nervous system is laid, the neural groove is formed, closing from the center to the sides. At the sides, small bumps called soulmates can be seen, the neural groove becomes two neural tube, which layer forms for example, spinal cord and brain those cells later become the neural networks which enable us to think. In the fourth week of development, this process is almost complete. The embryo is still in the amnion, which is filled with amniotic fluid that has numerous functions. The artic plaque codes, which are the basis for the inner ear can't be seen, and the heart is already pumping blood through the intra embryonic blood vessels. The yolk sac and a body stock continued to nourish the embryo. The quarry on is the outer membrane and is connected to the body stock. The chorionic villi are surrounded by maternal blood. This allows him to carry nutrients to the embryo and nourish it. We'll see more on this later. During the fourth week, three pairs of pharyngeal arches appear. In addition, the upper limb buds are visible first, followed by the lower limb buds. The embryo is now curved in the C shape. The caudal imminence is till like in shape, the soulmates which give rise to the cells forming the skeletal muscles and components of the skin, among other things can still be identified. The embryo continues to grow rapidly, measuring approximately four to five millimeters by the end of the fourth week. The lens placards and olfactory pits are formed. The leader arms and hands as well as legs and feet can be already well identified. The hands will develop from paddles to separate fingers by The eighth week the embryo is about 23 millimeters long by the middle of the eighth week, the legs will not lose their wet feet until a few days after the hands. embryogenesis turns into fetal Genesis in the ninth week, and in the third month, that is from the 12th week on, the fetus already has a human like appearance. The eyelids are closed, the skin is translucent. In the following weeks, the fetus grows and the ossification of the fetal skeleton takes place so that the bones are clearly visible on ultrasound images by the 16th week. In addition, the body is completely covered with downy lanugo hairs, which help among other things, to keep the vernix secreted by dedicated cells on the skin. The vernix protects the skin from direct contact with the amniotic fluid. From about the 18th week, the mother can feel the baby's movements. In addition, the sucking reflex has already been established. By the 28th week, the hair on the head, eyebrows and eyelashes continue to grow. In addition, the eyes open. The fetus gains a lot of mass in the last few months and the lateral go hairs and the vernix gradually fade away. It is also slowly getting tighter and tighter in mom's belly. At first, the fetus is supplied by the body stock and yolk sac, but then more and more by the umbilical cord and placenta. Since the fetus possesses both the DNA of the mother and of the Father, the blood of the fetus must not mix with the blood of the mother. The placenta is responsible for this. It is responsible for the exchange of substances between mother and fetus. The chorionic villi, which were previously completely distributed over the Korean have regressed to other parts of the uterus. The remaining villi are part of the placenta. maternal blood rich and oxygen and nutrients interest the intervillous space via the arteries. veins carry away the oxygen and nutrient poor blood. The chorionic villi extract oxygen and necessary nutrients from the mother's blood. nutrients include carbohydrates, amino acids, fats, vitamins and iron. oxygen and nutrients are then transported to the fetus via the veins with the help of the umbilical cord. However, waste products also reached the villi via the arteries. This allows the fetus to release its waste products such as carbon dioxide and urea and to the maternal blood. The mother's organism then takes over the excretion of these substances. After about 38 weeks, the fetus is fully developed. It measures 50 centimeters and weighs around 3000 grams. The birth takes place now or in the next two to four weeks.

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