Your brain through 40 impressive facts!
1. The brain is made up of 73% water.
2. Although the brain makes up only 2% of body mass, it consumes about 20% of whole body oxygen.
3. The brain of a newborn weighs 375 g, but by the first birthday it triples in size and weight to reach approximately 1 kg.
4. Your brain stops growing when you reach the age of 25. After this age he loses nerve cells every day. When a person reaches the age of half the brain begins to shrink.
5. However, reducing the amount of brain is not about losing intellectual ability. There is no evidence that a larger brain is more intelligent than a smaller brain.
6. Every day, adults aged 20-60 lose about 12,000 neurons, which are no longer replaced.
7. Nerve impulses coming and going in the brain circulate at a speed of about 273.5 km per hour.
8. The amount of energy generated by the human brain is about 23 watts, enough to light a small light bulb.
9. Brain dry matter contains at least 60% fat. This makes the brain the fattest organ of the body.
10. The signs of successful neurosurgery come from the Stone Age.
11. Scientists think your brain is more active during sleep than when you are awake.
12. Although the brain processes all the information that comes from every part of the body, it does not feel any pain that comes from it, because there are no pain receptors in it. Headaches originate from the tissues, nerves and blood vessels that surround the brain.
13. The cortex of the hemispheres has a thickness of 1.5-4.5 mm. If it were to open, then its surface would reach up to 2500 cm2.
14. The right side of the brain controls the left side of the body, while the left side of the brain controls the right side of the body.
15. The right and left sides of the brain communicate with each other through 250 million nerve fibers.
16. The average brain volume of males is on average 1274 cm3, while that of females is 1131 cm3.
17. The average weight of the male brain reaches 1.3 kg, while that of the female 1.18 kg. However, brain weight does not correlate with intellectual abilities. The brain of Russian writer Ivan Turgenev weighed 2 kg, while that of Albert Ainshatin only 1.22 kg or 10% less than that of other people. In fact the density of neurons in Einstein's brain was greater than in other people's brains.
18. The myth that man uses only 10% of the brain is not true. New technologies, especially those related to brain imaging, have found this myth irrelevant.
19. The brain contains more cholesterol than any other organ in the body. Practically it contains 25% of the total amount of cholesterol in the body. The brain does not get cholesterol through the blood, but produces it itself.
20. A particle of the brain the size of a grain of sand contains 100,000 neurons, which form about 1 billion synapses (contacts) between them.
21. The largest brain in the animal life is found in kashalots. It weighs up to 9 kg. On the contrary the elephant brain weighs only 6 kg.
22. Information between brain neurons circulates at a speed of up to 250 m per hour.
23. The human brain begins to lose some of its cognitive functions at the age of 20 years.
24. When the Egyptians practiced the process of mommification they removed the brain by intervening through the nose.
25. The brain's capacity to store information is considered virtually limitless. If the number of brain neurons is thought to reach 86 billion, the number of contacts (synapses) between them would reach up to 1 quadrillion or 1000 trillion.
26. If all the blood vessels of the brain were placed in a row one after the other, their length would reach up to 160 934 km. The perimeter of the Earth at the equator is about 40,000 km. The total length of the blood vessels of the brain would be enough to circle the perimeter of the Earth four times at the equator!
27. Scientists estimate that 100,000 chemical reactions occur in the brain every second.
28. Man experiences about 70,000 thoughts a day.
29. The average size of the human brain has decreased by about 23 cm3 over a period of 5,000 years. Scientists are unable to explain why.
30. The average width of the human brain reaches 140 mm, the average length 167 mm, and the average height 93 mm.
31. The world record for staying awake for 264 hours (11 days) was achieved by Randy Gardner in 1965.
32. During the early stages of embryonic development the rate of neuron proliferation in the brain reaches up to 250,000 pieces per minute.
33. Each neuron can transmit up to 1,000 nerve impulses per second and make hundreds of thousands of synaptic contacts with other neurons.
34. Every minute, the human brain is supplied with 750-1 000 milliliters of oxygenated and nutrient-rich blood.
35. Neanderthal human brain was 10% larger than that of Homo sapiens.
36. Electromagnetic waves, emitted by cell phones or other devices, are thought to adversely affect the activity of 140 brain proteins.
37. To date it has been thought that the human brain has more neurons than the Milky Way pathway. In fact the Milky Way has 200-400 billion stars, when our brain has only 86 billion neurons.
38. The human brain can perform 1,016 processes per second, making it the most powerful computer among all human-invented computers.
39. The human brain has an astonishing memory capacity. It can store up to 2,500,000 gigabytes of information, while an iPhone 7 can only store 256 gigabytes.
40. The number of neurons in the left hemisphere is 186 million more than the number of neurons in the right hemisphere.
41. The brain begins to lose consciousness only 8-10 seconds after stopping the blood supply.