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, 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.
Pulse rate 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 right away? This is due to the extremely rapid 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 an energy equivalent to a 10 watt light bulb. Cartoons, where a light bulb above the head hangs over the characters during the thought process, are not too far from the truth. Your brain generates as much energy as a small light bulb consumes, even when you sleep.
Meanwhile, the brain is the organ with the highest energy consumption. It takes from the body about 20% of the energy, while it is 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 the estimated 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 due to oxygen deprivation. Therefore, he likes it when you breathe deeply.
If the inflow of oxygen to the brain is increased, then those areas of the brain that did not function with weak blood flow and the aging process begin to activate, and cell death will slow down.
Interesting fact! The carotid arteries have branching into the smallest vessels inside the skull, forming an intricate and amazing network of capillaries. These are very thin blood tunnels that provide access to blood to the smallest parts of the brain, providing the necessary number of neurons and oxygen.
Brain work in a dream
The brain is more active at night than during the day. Logically, we can assume that we perform mental processes, complex calculations and tasks during the working day, which would require more brain activity than, say, lying in bed.
It turns out the opposite is true. As soon as you fall asleep, the brain continues to work. Scientists do not yet know to the end why this is so, but for all dreams We must be grateful to this very body.
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 was in childhood that almost all thought processes occur in the right hemisphere. The child knows the world in images. Therefore, the memories of a child are like dreams in their structure.
An adult child is taught by ready-made and definite concepts, what our brain is “slaughtered” with. Therefore, asymmetry of our brain occurs. The left hemisphere is overloaded during day work. The situation is leveling off during sleep, when the left hemisphere “falls asleep”, and the right one begins to act actively, plunging us into the world of figurative thinking.
Brain work during dreams
Scientists argue that the higher the IQ of a person, the more he dreams.
This of course may 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, of which we think only 2-3 seconds, and this is barely enough for the brain to fix them.
Interesting fact! Scientists conducted an experiment in which it was found that the brain is much more active in humans when he dreams, and is not focused on monotonous work.
At the time of the beginning of the dreaming process, a large part of the brain begins to work hard. 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 nervous tissue could not grow or be restored. 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 basis of any nervous system. These are special cells, in which tree-like processes diverge in all directions, coming into 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 different actions much more efficiently and faster than any created machine.
Brain doesn't feel pain
The brain itself cannot feel pain. While the brain is the center of pain management, when you cut your finger, or burned, it does not have 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 cause you a headache.
However, headaches are of various kinds, and the exact causes of many remain unclear.
Human brain and water
80% of the brain consists of water. Your brain is not a solid gray mass that is shown on TV. It is a soft and pink fabric due to the pulsating blood there and high water content.
So, when you feel thirsty for it, it’s 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 proper existence will cease.