The human brain is a complex nervous system that is responsible for a huge number of functions in the human body. Outwardly, the brain resembles a gelatinous mass of yellowish color, therefore in ancient times it was believed that this is a substance that cools the blood, and it was not stored during the embalming of corpses.
Instructions
Step 1
The human brain is an organ of the central nervous system, consisting of a huge number of nerve cells and processes. As a person grows and develops, the brain grows with him and soon takes the form of a skull.
Step 2
The weight of the brain in a normal person ranges from 1020 to 1970 grams. Previously, it was widely believed that the mental capacity of a person depends on the weight of the brain. However, it was soon proved that this was not the case.
Step 3
Many interesting facts have always been associated with this organ. For example, it was believed that the more educated a person is, the less the likelihood of brain disease. Intellectual activity stimulates the production of tissue designed to compensate for the diseased. It was also noted that believers go to doctors much less often than non-believers, due to the fact that during prayer, the breathing rate decreases, which contributes to the self-healing of the body. It is known that the more you train your brain, the more it grows. So, the record weight of the human brain at the moment is 2049 grams.
Step 4
Without going into the anatomical features of the structure of the brain, it can be divided into three main parts: the lateral surfaces of the left and right hemispheres, the base of the brain, and the cortical upper part.
Step 5
If you look at the brain from the side, you can see that it is completely covered with folded tissue, consisting of neurons. The collection of this tissue is called the cerebral cortex. The bark, in turn, controls various bodily functions, so it is divided into several zones.
Step 6
At the base of the brain is the cerebellum, which is divided into two hemispheres. They are connected to the brain by the pons varoli. This part contains the optic nerves and the olfactory zone.
Step 7
If you look at the human brain from above, you can see that it also consists of two hemispheres, which are separated by a central groove and connected in the middle by the corpus callosum.
Step 8
Looking at the brain from behind, you can see the spinal cord, which is connected to the brain via the medulla oblongata. Most of the medulla oblongata contains the mastoid bodies, which are responsible for controlling emotions.
Step 9
At all times, people have high demands on the brain. It performs thousands of different functions in one minute. Human life depends on the correctness and accuracy of such decisions.
