Mystery of human formation

Thanks to the combination of the most powerful medical imaging techniques - scanners and magnetic resonance imaging - with modern information technologies, radiologist Alexander Tsiaras has recorded three dimensions of the most mysterious charm. of life: it is the formation of a baby, from conception to birth.

" Animal microbes . like tiny peas with a long tail! " Scientist Artonie Van Leeuwenhoek did not believe his eyes at what he regarded as male and female twists and closures. in translucent bags. It was 1677. No ordinary eyes could see it before him. The new microscope was invented and he was the first scientist to use it to observe a patient's semen. " These microscopic animals are so small - he is surprised - to the point that a million of them put together do not reach the size of a large grain of sand . " So the journey to the world Extremely small start, to learn the origin of life.

Men sow seeds, women are only humus

Source: bio.m2osw The above discovery also has limitations and gives rise to other mistakes at the time. Why are so many sperm just to give birth to a single person? Why are the remaining sperms dead? It was once believed that " men sow seeds, women are mulch! " This theory has a lifespan of 150 years, until the discovery of female sexual cells.

At the top of the act of love, ovum - round like earth, bubbles, planets, miniature globes, spheres like the first form of the universe and waiting to be activated. Great movements of fertilization are triggered. 300 million spermatozoa start "egg-leaf armor" of ovule. They have the same weapon: the flattened head is surrounded by enzymes intended to digest the cumulus cloud surrounding the ovule and a mobile tail like a whip allowing them to move forward. Only 3 million of them penetrate the uterus. The distance must cross to reach this area of ​​20 cm. Speed ​​reaches 1 cm / min. Some sperm go back up the uterus without ovulation and die on their own. The winner is among the other half. A few hundred sperm reached the goal, but only one of them enjoyed the glory of victory. Oom is ready. In an instant, the other sperm are removed. They will wander around the ovaries for a few more days, as miserable souls are not born and eventually die, disillusioned . But with the victor, a new adventure begins, tired, costly strength.

At the beginning of the last century, an American zoologist, Edwin Brewster, was amazed to see, through a microscope, how " a plump cell suddenly became distorted, stretched, turned itself and spawned. into perfect living cells ". He explained: "That means people should not be built like a house of wood or concrete, but like a brick house . We will grow when these little bricks live themselves. dividing into half bricks, then they turn up to become a complete brick . "

From a single brick

Today, in the Mystery of Life, from conception to birth of Alexander Tsiaras, Barry Werth science writer re-uses the metaphor of the house to write a comment: " Imagine you are a court skyscraper, built in 9 months from a single brick When the sprouting tile divides itself, it will produce all kinds of other necessary materials for the construction and operation of the giant tower. This giant . The first brick and its descendants know exactly how much for each ingredient, how much bricks must be sent, when and how to pair them . ". Thus each part, from single cell, differentiated and found their position, their exact operation.

The first merger will last for 12 hours. During that process, 23 maternal chromosomes combine 23 of the father's chromosomes. Code is engraved in the mother's cell: proliferation may begin. The division into two of the chromosomes with thousands of their genes. Appropriate copies still stick together. Sometimes, they separate, and from there, give birth to twins. After two days of conception, the new division begins: 4 cells become 8 (it is at this stage, people often implant in vitro fertilized oocytes into the uterus .) then 16, then 32 at the end of the 3rd day. During the 9th and 12th days, eggs only measured 1/10 mm. As the tornado intensified the cells increased, its size also doubled at each division: 0.2 mm in the second week, where the folds and continuous wrapping were carried out with High speed, stretch this original egg out to turn it into an embryo. By three weeks, it was almost 2 mm wide, had a outline shape with a head positioned with eyes and ears, a spine and a beating heart. During this miraculous time, the wife has not received anything yet. But the mother-child relationship has begun. Nausea starts around the 25th day: a wave of silent vibrations exchanging between mother and child. They stop only when the baby is born. The noise outside, the voice, the music or the state of calmness, serenity, stress or irritability, all act as messages on the subconscious.

A little creature was born

In about 6-7 weeks, small bulges begin to appear on the sides of the embryo, stretched into shoots for later to arise limbs. The shoots sprout all over the spring tree: giving the pristine mouth and the future jaws, giving the nose, eyes, tongue, teeth . By 25 days, we will see a Picasso work, up to 32 days is an ET - a creature coming from space with a head as big as half of his body; up to 42 days, the Irish demon and the long tail bristled with vertebrae like a dragon. Then the eyes, optic nerves and eyelids, stomach, liver, pancreas, spine, two kidneys, muscles. In the 9th week, with the elbows on the arms now stretched out, the toes and hands, legs .

In this extraordinary "factory", every major organ of the body is created with enthusiasm and no downtime - the moving channel never stops. Unless . The brain makes extraordinary things with a new proliferation of neurons (neurons) at a tremendous rate of 100,000 neurons per hour! Unexpectedly, up to 8 weeks, the whirlwind stopped just as fast as it started: the head was erected, the eyes were wide open, the arms and legs were completed, the thumb and forefinger faced each other, the heart was stopped 2 ventricles and dam 80 circuits / minute: the embryo is completed. From now on it is called a fetus.

In addition, the fetus also has its own posture and looks like a frog with eyes on both sides. But then these two eyes will slowly get closer to each other in front of the head and quickly bring them to look more human. And lips formed. By 56 days, all agencies are different from each other. At this time, the small person turned his head, moving his arms and legs. At 12 weeks, the pregnancy reaches the age at which sex begins to appear. At that age, according to embryologists, "pregnancy begins to show personal changes, certainly based on acts inherited from parents." The age of the fetus starts sucking on the thumb. This is also the stage of pregnancy that is easy to die in the womb under a certain shock.

When the danger is gone, the baby grows up rapidly: 20 cm with 250 grams in the 5th month. And its heart pushes 144 liters of blood / day throughout the body, beating like a athlete's heart. Moreover, one can hear it through the womb. The baby slept and sucked his thumb. It thinks. Eyes closed.

The 8th month is the month of the dream. The 9th, last month, is the month the child knows to "clean" the toilet. A ruddy complexion began to straighten out, forming nails - beautiful legs, eyebrows, eyelashes and hair. It was time to prepare for birth. At that time it slowly swung around. The way through has opened, the pelvis of the mother flipped the island (a perfection that the skeleton of the male is incapable of). One day he heard and felt a force to force it out through a "narrow door". The skull is first and then the head . A little human has just been born.