When does the fetal brain develop?

When does the fetal brain develop? The fetal brain begins to develop within 1 week after fertilization.

When the egg and * * * combine to form a fertilized egg, it will start to divide, one part will become the brain and the other part will become the nervous system. So, before you know you are pregnant, the embryonic brain has been divided into three parts.

The whole process of fetal brain development Three weeks after fertilization, the ectoderm is a bit like skin, and the brain will begin to swell.

Before the full moon of pregnancy, the whole embryo is shaped like a small fish, and its tail bulges like a Baotou and looks like a comma. There have always been two grooves in the brain, one separating the forebrain from the midbrain, and the other separating the midbrain from the hindbrain. At this time, the expectant mother will realize that she is pregnant.

In the fifth week of pregnancy, a large number of cells divide to form the cerebral hemisphere, and then gradually increase their growth, and the cerebral cortex begins to develop.

In the seventh week of pregnancy, there will be two brain bubbles in the forebrain. Its cell wall is only two layers, which is very thin. Between the two brain vesicles, there will be some nerve cells, which will divide to form two new cells, one of which will become dendrites and axons, and the other will play an auxiliary role.

Generally speaking, by the 1 5th week of pregnancy, there will be several regions in the brain: 2 regions in the forebrain, 3 regions in the midbrain1region and 3 regions in the hindbrain, which constitute the basic framework of the brain, and the brain will gradually differentiate into the following parts: meninges, nerves, fibers, nuclei, ganglia and so on.

By the 33rd week, the nerve center of the brain was basically formed, and the brain was developing from fetal formation to seventeen or eighteen years old. At this stage, the brain develops through the comprehensive influence of genes and environment-congenital factors and acquired factors.

How to promote fetal brain development during pregnancy To promote fetal brain development during pregnancy, we mainly grasp three key periods, as follows:

The first stage: the formation of fetal brain (8 weeks before pregnancy)

This period is the stage of fetal brain tissue formation. At this time, we should pay special attention to the influence of external factors. Expectant mothers are advised to get rid of bad habits in life, such as smoking and drinking, and not to do things that damage fetal brain cells. Don't stay up late, pay attention to diet and nutrition, don't take a sauna, don't take a hot bath. In addition, stay away from places with high radiation in life, such as computer rooms, hospitals and other places where X-rays are taken.

The second stage: the rapid proliferation of brain cells (20 weeks pregnant)

This stage is a period of rapid proliferation of fetal brain cells, and it is very important to promote the proliferation of fetal brain cells at this time. It is suggested that expectant mothers should pay attention to prenatal education in addition to adequate nutrition. For example, pregnant mothers or prospective fathers can touch the fetus at a fixed time every day for prenatal education, and gently touch the belly while chatting with the fetus, which will help promote fetal development and deepen parent-child feelings. Music prenatal education and sports prenatal education can also be arranged appropriately.

The third stage: the active period of brain cell growth (30 weeks pregnant)

During this period, the fetal brain foundation has developed and formed, but the brain neurons will not stop. Expectant mothers can develop neurons in some ways. Such as maintaining moderate exercise. Because exercise can feel the vestibule of the fetus, promote the development of the fetal nervous system, and contribute to the coordination ability of the fetus after birth.