Incredible facts about the human body. Brain
The human body is an incredibly complex and confusing system that is still confusing for doctors and researchers, despite thousands of years of medical knowledge.
As a result, bizarre and sometimes incredible facts of our body appear.
The brain is the most complex and least understood part of human anatomy. Maybe we don’t know much about him, but here are some very interesting facts that are known.
The speed 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 a wounded finger hurt right away? 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 reaction rate of nerve impulses is comparable to the speed of a powerful luxury sports car.
The brain produces energy equivalent to a 10-watt bulb. Cartoons, where a hero weighs a light bulb above his head during the thought process, are not too far from the truth. Your brain generates as much energy as a small bulb consumes, even when you sleep.
Meanwhile, the brain is the organ with the highest energy consumption. It takes about 20% of energy from the body, while it makes up 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).
Human brain cells can store 5 times more information than the British or other encyclopedias. Scientists have yet to find out the final numbers, but presumably the brain capacity in electronic terms is about 1000 terabytes.
For example, the UK national archive 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 its small brain mass, it consumes more oxygen than any other organ in the human body.
This makes the brain very sensitive to damage associated with oxygen deprivation. Therefore, he likes it when you breathe deeply.
If the flow of oxygen to the brain is increased, then those areas of the brain that did not function during a weak blood flow and the aging process, cell death will begin to become more active.
Interesting fact! The carotid arteries branch into the smallest vessels inside the skull, forming an intricate and amazing network of capillaries. These are very thin blood tunnels that provide blood access to the smallest parts of the brain, providing the necessary amount of neurons and oxygen.
Brain work in a dream
The brain is more active at night than during the day. It can be logically assumed that we complete thought processes, complex calculations and tasks during the working day, which would require more brain activity than, say, lying in bed.
The converse is also true. Once you fall asleep, the brain continues to work. Scientists do not yet fully know why this is so, but for all dreams, we should be grateful to this particular authority.
Interesting fact! In early childhood there is no difference between sleep and wakefulness. This is explained by the place of thinking in the brain. It is in childhood that almost all thought processes occur in the right hemisphere. A child learns the world in images. Therefore, the memories of a child are similar to dreams in their structure.
An adult child is taught with ready-made and definite concepts, what “clogs” our brain. Therefore, the asymmetry of our brain occurs. The left hemisphere is overloaded during daytime work. The situation seems to be equalized during sleep, when the left hemisphere “falls asleep”, and the right begins to act actively, plunging us into the world of imaginative thinking.
The work of the brain during dreams
Scientists say that the higher the IQ of a person, the more he dreams.
Of course, this may be true, but do not take such a statement as a lack of thoughts if you cannot remember your dreams. Most of us do not remember many dreams. After all, the time of most dreams, about which we think is only 2-3 seconds, and this is barely enough for the brain to fix them.
Interesting fact! Scientists conducted an experiment, as a result of which it was found that the brain is much more active in a person when he dreams, and is not focused on monotonous work.
At the beginning of the dreaming process, most parts of the brain begin to work intensely. Therefore, we can conclude that dreams help in solving all important problems.
The number of neurons in the brain
The number of neurons in the brain continues to grow throughout human life.
For many years, scientists and doctors believed that the brain and nerve tissue could not grow or regenerate. 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 constantly.
Note! Neurons are the foundation 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 neurons that allow the brain to perform various actions much more efficiently and faster than any created machine.
The brain does not feel pain
The brain itself cannot feel pain. While the brain is the center of pain management, when you cut your finger or burn yourself, it itself does not have pain receptors and does not feel pain.
However, the brain is surrounded by many tissues, nerves and blood vessels, which are very susceptible to pain and can cause you a headache.
However, headaches are of various forms, and the exact causes of many remain unclear.
Human brain and water
80% of the brain is made up of water. Your brain is not a solid gray mass that is shown on TV. It is a soft and pink tissue due to pulsating blood there and a high water content.
So, when you feel thirsty, this is also because the brain requires water.
Interesting fact! On average, a person’s brain weighs 1.4 kg and is extremely sensitive to water loss. If the brain is dehydrated for a long time, then its correct existence will cease.