The human body is largely unique, it has a lot of amazing features. Many issues are still not fully explored - for example, scientists are still struggling with the mysteries of the brain. The more specialists learn about the human body and the features of its work, the more questions they have. This is an inexhaustible topic, on the basis of which more than one thousand scientific works will be written. Dozens of pages need to be written about some features of the body, while others can be described in several sentences.

Everyone should know about some interesting points related to the body and its work. It is worth telling at least about those nuances that can be summarized.

Human brain and nervous system

The human brain is located inside the cranium, which consists of 29 bones. In infancy, between the large bones are fontanelles - cartilaginous formations that overgrow with time. This is necessary so that the baby can be born - a large head could create serious problems during childbirth, but the fontanelles allow her to contract, deform, and then restore shape.

• The brain is capable of storing more than 4 terabytes of information.
• The brain constantly generates electrical signals, and during the day they are produced more than all mobile phones on the planet.
• The signal moves along the nerves at a speed of 274 km per hour.This is very fast, and for the human body this speed is quite enough. However, 30-meter diplodocus, dinosaurs of past eras, had an additional brain in the pelvic region, which was responsible for the back of the body, he lacked this speed.
• Dreams dream every person. But we simply forget about 90 percent of them.
• The brain of a newly born baby has approximately 14 billion cells, this is the maximum - during the future life they do not become more. On the contrary, gradually some of them begin to die - after 25 years, about 100 thousand of them die in a day. After 40 years, their death is even faster.

Blood supply and metabolism

In the human body there are many different chemicals. There is a lot of carbon in the body - it is enough to make 900 pencils. Fat with an average physique of a person is enough for 7 pieces of soap, sulfur to destroy fleas on one dog, potassium for a shot from a small gun, and there is enough water to fill a 50-liter capacity. But iron is enough for only one screw. And in each of us lives 2 kilograms of bacteria. But only 1 percent of all existing bacteria can cause illness. 287 cultures are transmitted with a kiss, but only 5 percent of them can cause the disease.

With a loss of 5 percent of the total mass of water, a person is very thirsty, if the indicator exceeds 10 percent, a fatal outcome is possible.

About 700 enzymes work simultaneously in the human body. And the total length of all blood vessels is about 100,000 km.They penetrate all organs and tissues except the cornea of ​​the eye - it receives oxygen from the air, and nutrients from the eye fluids that circulate freely.

Teeth and upper digestive system

99 percent of the calcium in the human body is in the teeth. And this is the only part of the human body that is not able to regenerate. But over time, they are erased - in left-handed people this process is faster on the left side, in right-handed people, the right side of the jaw is erased first, because most of the food is chewed by the leading hand. Teeth change once in a lifetime, due to individuality, some people do not know the problems with them until they are very old, while others lose them over time, partially or completely.

If one of the twins lives without a tooth, the second twin is very likely not to have one. But you can still have a complete set of teeth to a very old age, because their enamel is the hardest substance in the human body. And the chewing muscles give a load of 195 kg on the teeth on each side.

Interesting fact: By the age of 60, not only teeth can fall out - by this age, half of the taste buds also disappear.

Other notable features of the human body

• When a person turns red, his stomach also turns red.
• The baby can breathe and swallow at the same time, however, by 7 months, each of the processes is secured.
• A woman’s heart beats faster than a man’s. And the baby’s pulse is even higher.
• In the spring, breathing quickens for all people - about a third compared to the autumn figures.
• In autumn and winter, you should definitely wear a hat - up to 80 percent of the heat a person loses over his head.
• When a person sneezes, all processes in his body stop, and even the heart stops its work for a split second.
• Individual fingerprints appear in humans in the embryonic period, at 3 months of fetal development.

The human body surprises with many of its indicators. But each of the features did not appear by chance. Humanity has come a long way in evolution, and nature itself has created us as we are.