What are the prenatal brain development phases?
During the prenatal period, human embryos pass from several cells to a fully formed child in about 38 weeks. In this period, the human brain has its own time of growth and tends to be consistent for healthy human fruits. The main phases of the prenatal brain development occur during nine months of pregnancy, including the formation of a nerve tube in the first month, the growth of the cortex in the second month was developed in the second month in the fourth month and the separation of the bark to the lobes in the sixth month. This includes postmortem investigation on continuous embryos and fruits at different stages of fetal development. Doctors also conducted experiments and dissections on animal fruits that have similar brain structures to humans such as monkeys. Finally, modern technologies, such as displaying all science OW to explore and monitor the prenatal brain development of fruits while they are still in the brands of their mothers. Through all these methods, experts mapped the physical development of the brain and emotional and mental development.
Prenatal brain development begins in the first month of the prenatal period. During this time, all other main bodies are formed. In the third week of life, the human heart began to beat. It is probably this time that the first form of the brain is formed. This structure is called a nerve tube, eventually developing into the spinal cord and brain.
In the second and third months of development, the embryo features of the face begin to develop into a more human form, including mouth, nose, eyes, eyelids and ears. At this time, the neuron tube begins to turn into what becomes the main parts of the mimmuses, including the cortex. The third month of prenatal development, the embryo begins to show reactions and reflexes. The fetal reactions to external experiences, such as bright lights and sounds, continue to develop into the fourth month, as well as the ability of a small being to create facial expressions.
The fifth month of prenatal brain development begins to see that the fetus of theseRies and reactions actually control. At this point, the physical development is such that the fetus can stretch and even turn into the womb. Experts believe that the ability to consciously respond to feelings is even stronger during the sixth month, when the cortex is divided into separate lobes. The fetus at this point could even have the ability to remember.
The final phase of the development of the prenatal brain in the last trimester leads to the brain that becomes almost similar to a fully formed person, at least in the structure. By the seventh month, the prenatal brain groted, a curved look that is associated with the brain of the adult, and Myelin develops on the outside of the nerves from the brain to isolate them. Brain waves can be detected. Then in the eighth month, the main corty, such as hearing and visual, is formed, allowing the fetus to understand what they see and hear. The fetal brain contains about as many neural cells as the adult brain until the last month, although it will be only one quarter of the size of adults at birth.