Incredible facts about the human body. Brain
The human body is an incredibly complex and confusing system that still confuses doctors, researchers, despite thousands of years of medical knowledge.
As a result, there are bizarre and sometimes incredible facts of our body.
The brain is the most complex and least understood part of human anatomy. About him, maybe we do not know much, but here are a few very interesting facts about which we are aware.
Rate of impulses in the brain
Nerve impulses travel through the brain at a speed of 273 km per hour. Have you ever wondered why you react so quickly to what is happening around you? Why does the injured finger hurt immediately? This is due to the extremely fast movement of nerve impulses from the brain to parts of your body and vice versa. As a result, the speed of the reaction of nerve impulses is comparable to the speed of a powerful luxury sports car.
Energy of the brain
The brain produces energy equivalent to a 10-watt bulb. Cartoons, where over the heroes weigh a light bulb over your head during the thought process, are not too far from the truth. Your brain generates as much energy as a small light bulb uses, even when you are sleeping.
Meanwhile, the brain is the organ with the greatest energy consumption. He takes from the body about 20% of the energy, while 2% of the total body weight. Most of this energy is spent on the exchange of information between neurons, as well as between neurons and astrocytes (cell type).
Memory of the brain
Human brain cells can store 5 times more information than the British or other encyclopedias. Scientists have yet to learn the final figures, but presumably the brain capacity in electronic terms is about 1000 terabytes.
For example, the national archive of Great Britain, containing historical records for 900 years, occupies only 70 terabytes. This makes human memory impressively roomy.
Oxygen in the brain
Your brain uses 20% of the oxygen you breathe. Despite the small mass of the brain, it consumes more oxygen than any other organ in the human body.
This makes the brain very sensitive to damage associated with deprivation of oxygen. So he likes it when you breathe deeply.
If the influx of oxygen to the brain increases, then those areas of the brain that have not functioned in the weak blood flow will start to activate and the aging process, the death of cells will slow down.
Interesting fact! Sleepy arteries have branching into the tiniest vessels inside the skull, forming an intricate and surprising network of capillaries. These are very thin blood tunnels that provide blood access to the smallest areas of the brain, providing the necessary number of neurons and oxygen.
Work of the brain in a dream
The brain is more active at night than in the daytime. Logically, we can assume that thinking processes, complex calculations and tasks we do during the working day, which would require more brain activity than, say, lying in bed.
It turns out the converse is also true. Once you fall asleep, the brain continues to work. Scientists do not yet know why, but for all dreams. We should be grateful to this body.
Interesting fact! In early childhood, there is no difference between sleeping and waking. Explain this is a place of thinking in the brain. It is in childhood that almost all mental processes occur in the right hemisphere. The child learns the world through images. Therefore, the memories of the child are like dreams in their structure.
The matured child is taught already ready and certain concepts, than "hammer" our brain. Therefore, our brain is asymmetric. The left hemisphere is overloaded during the daytime work. The situation is sorted out during sleep, when the left hemisphere "falls asleep," and the right begins to act actively, plunging us into a world of imaginative thinking.
Work of the brain during dreams
Scientists claim that the higher the IQ of a person, the more he dreams.
This of course can be true, but do not take this statement as a lack of thoughts, if you can not remember your dreams. Most of us do not remember many dreams. After all, the time of most dreams, about which we think only 2-3 seconds, and this is barely enough for the brain to fix them.
Interesting fact! Scientists conducted an experiment, which found that the brain is much more active in a person when he dreams, rather than concentrating on a one-color work.
At the beginning of the dream process, most of the brain regions begin to work hard. Therefore, it can be concluded that dreams help in solving all important problems.
Number of neurons in the brain
The number of neurons in the brain continues to grow throughout human life.
For many years, scientists and physicians have believed that the brain and nervous tissue can not grow or recover. But it turned out that the brain works the same way as the tissues of many other parts of the body. Therefore, the number of neurons can grow continuously.
For your information! Neurons are the basis of any nervous system. These are special cells, in which the tree-like processes diverge in all directions, in contact with neighboring cells, which have the same processes. All this forms a huge chemical and electrical network, which is our brain.
It is the neurons that allow the brain to perform different actions much more efficiently and faster than any machine created.
The brain does not feel pain
The brain itself can not feel the pain. While the brain is the center of the treatment of pain, when you cut your finger, or are burned, it itself has no pain receptors and does not feel pain.
However, the brain is surrounded by a multitude of tissues, nerves and blood vessels that are very susceptible to pain and can create a headache for you.
However, the headaches are of different kinds, and the exact causes of the occurrence of many remain unclear.
The human brain and water
80% of the brain consists of water. Your brain is not a solid gray mass, which is shown on TV. It is a soft and pink cloth due to the blood pulsing there and the high water content.
So, that when you feel thirsty this, including, because the brain requires water.
Interesting fact! On average, the human brain weighs 1.4 kg and is extremely sensitive to loss of water. If the brain is dehydrated for a long time, then its correct existence will cease.