Pregnancy and fetal formation
Pregnancy occurs when a woman succeeds in one sperm among the millions of animals separated from the male at the moment of intercourse to fertilize the single egg produced by the female within the cycle of the monthly uterus, and the vaccination occurs by the merger of both male and female paddles together to form a fertilized egg begins the life of the fetus, Only through multiple divisions to be the entire human body that develops during the nine-month gestation to begin with the normal manifestations of life Jenin completed if the exit from the womb.
Pregnancy in the fifth month
The fifth month of pregnancy is the middle of pregnancy, starting from the 18th week and extending until the end of the twenty-first week. The mother has reached the second trimester. This month is more comfortable for the mother than the first months, which were full of nausea, exhaustion and dizziness. Other, the fifth month is far from the last months and carries with it the weight and pain. In general, each week of pregnancy has its developments on the health of the mother or on the structure of the fetus and its formation, and is not without the fifth month like other months of pregnancy of pain and psychological fluctuations and adaptive difficulties, with the remarkable development in weight and nutritional and internal imbalances, but is characterized by calm More stability.
Fetal formation in the fifth month
The fifth month of the fetus’s age is the month of rapid growth. The previously mature internal organs take matured and the brown fat begins to grow under the baby’s skin and the length of the fetus increases sequentially. At the beginning of the fifth month, Centimeter, with an end up to 25 centimeters, and fetal weight is increased by about 200 grams. The weight starts to rise gradually due to the speed of formation and the building of fat below the skin E, weighing at the beginning of the fifth month up to 200 grams, while the weight at the end of the month 350 – 400 grams, and can distinguish the structural and structural changes of the fetus of the fifth month to four periods of time as follows:
Eighteenth week of fetal age
The first week of the fifth month of pregnancy is the most appropriate for the examination of the amniocentesis necessary to verify the fetus’s safety from any sexual or genetic abnormalities, where the genital organs are very clear and can be distinguished by sex. The fetus is about 15 centimeters tall this week and about 200 grams. The fat starts to form under the skin of the fetus gradually. A white fatty protective substance called melanin forms to encapsulate the nerve axis and nerve tissue and then slowly begins to circulate around the spinal cord. The embryo for a full year, and this week some of the vital processes of the fetus begin to appear; it becomes easy to listen to his heartbeat via the stethoscope, as you see T his rotation in all directions, and his brain begins to analyze the sounds that reach him through the ear that the final stabilized their position, and become Hbugeth very sensitive to light.
Nineteenth week of fetal age
The length of the fetus increases markedly; it is about 18 centimeter long and weighs 250 grams. Its body covers a sticky white substance made of fuzz, dead skin cells and fat. This layer is important to protect the fetus from the effect of the surrounding fluid, which swallows The embryo is part of it from this stage, while the kidneys work on urine secretion. This week, sensory neurons settle in their own places in the brain and the sensory nerve growth of the fetus peaks, and neurons are connected between the fetal brain and its muscles. On the other hand, the melanocytic layer continues to grow under the skin of the fetus to give it a uniform color to its skin, and keep it warm as it moves from its own world in the womb to the outside world. As for its outer appearance, its upper and lower limbs are completed to appear natural, and the hair grows on the scalp.
Twentieth week of fetal age
This week, the fetus’s real appearance is very similar to that of a normal child. This week the fetus grows to about 20 centimeters in length and weighs up to 300 grams. Meanwhile, the fatty layers follow up throughout the body. A sticky layer of fat that tends to whiten, called cotyledon, forms over the fetal skin to prevent it from cracking and protects it from the length of its exposure to the salivary or phlegm The fetus swims in the fetus and then helps to facilitate the fetal slippage during the birth process. As a result of the direct exposure of the fetus to the internal fluid and the completion of its internal structure, it swallows samples of liquid that may contribute to the feeding of the child, and exercises its digestive system to suck the body water from it, and put the rest towards the large intestine This period is known to be scientifically known as meconium, a group of digestive secretions and dead cells that accumulate in the intestines of the fetus to emerge as primitive stools Harmless. As the layers of the skin are structured to be three layers are the skin, dermis and middle, and continue to grow hair and nails, and begin permanent teeth forming behind the teeth.
Twenty – first week of fetal age
This week, the image of the embryo shows the fifth month of the final month, and nothing special for this stage of time more than the regularity of sleep and wake up and activity of the fetal motor; the mother feels the movement of the fetus and kick during the waking of the balanced, which nearly half a day, while the activity is absent in the other half spent asleep Still.
At the end of the month, the fetus reaches a record height of 27 centimeters or may increase and decrease depending on the fetus’s growth and inheritance. It weighs around 400 grams or may increase and decrease depending on its growth and nutrition. This increases the weight of the placenta, which continues to grow until birth. The vaginal growth of the female fetus is at an advanced stage, with the fallopian tubes and most female sex structures. The sexual structures of the male fetus Tmmelt to some extent. The appearance of the exterior carries more distinctive configurations; the scalp appears covered with hair that continues to grow, and the completion of the eyebrows and eyelids and cover the fingernails with nails, and the body of the fetus is the feces that disappears before birth. Doctors point to the severity of the fetus’s sensitivity and response to sounds this week, so it may calm down or erupt in response to the sounds emitted from the surrounding environment.