Pregnancy takes place in multiple stages, through which changes occur on the pregnant woman and on her fetus in her abdomen. Pregnancy is not easy and requires much care and attention because any problem that can not be solved during pregnancy may affect the life of the pregnant woman and the life of her fetus.
In pregnancy, the pregnant woman may feel some psychological and physical changes from one period to the next, including what she can interpret and not understand, so she should be more involved in the stages of pregnancy and stages of fetal development and changes that may affect the fetus during pregnancy. We will then discuss the stages of fetal development.
Stages of fetal development
- Embryo embryo begins when fertilization of the sperm of the egg at the woman, and this fertilized egg to the uterus within a week of vaccination and implanted in the wall of the uterus.
- In the second month of pregnancy, the parts of the fetus begin to develop. At the end of the pregnancy, all the main internal organs are formed, but in a primitive way, they continue to grow and develop. The heart is able to pulse and push the blood in the body. The nose begins to form and the mouth, The length of the fetus is approximately 2.2 centimeters.
- The head may be free, the neck may be formed, the intestines, lungs, liver and kidneys are in continuous growth. The length of the fetus is approximately 7.5 centimeters and its weight is about 30 grams. .
- By the end of the third month, the fetus has become full, but it can not live if it is born, as the remaining period of pregnancy gives the fetus members development to reach the complex degree of each of them in order to create a child capable of living independently at birth.
- In the fourth month, the growth of the limbs at the fetus is completed and the fingers, hands and feet appear. The eyelids and eyelids begin to grow. The entire body of the fetus covers the follicle. It is 16 centimeters long and weighs about 135 grams.
- In the fifth month hair appears on the head as the length and weight of the child continues to increase, and the muscles grow, weighing 340 grams and 25.5 centimeters long.
- By the end of the sixth month, the child’s length has reached 33 centimeters and weighs 570 grams, where he can live for a short period if he is born.
- In the seventh month, the child becomes 37 centimeters long and weighs 900 grams, where he is able to live if he is born in the prematurity.
- In the eighth month the child has completed the growth of the head has become consistent with the body, and it is covered with white paint, and the length of 40 centimeters and weight of 1.6 kg.
- At the end of the ninth month the embryo is fully developed and ready to go out to life and weighs approximately 3.4 kg and its length reaches 50 centimeter.