Interesting: facts about human anatomy. Interesting facts from the world of human anatomy

It's safe to live when you know more. What do you know about the structure of the human body? Numerous truths and irrefutable evidence. Scientific research, practices that never tire of bringing and discovering something new.

The human body is a complex chemical laboratory in which the most complex metabolic processes are continuously taking place.

If we are asked the question: "What does the structure of the personality consist of?", Then undoubtedly it is the skeleton, skin, blood and organs. The most important elements. Studying each substance, we discover something new for ourselves.

Probably everyone knows that the nature of man and his essence are studied by two sciences; physiology and anatomy. These branches of knowledge tell us what is necessary. But, there is still a lot of curious things that need to be studied and cognized. Only the most curious!

Skeleton - support for the body and protection of all internal organs

• Human bones (especially the thigh) are very strong and durable. In structure, they resemble a reinforced concrete structure. Can support the weight of the granite slab.
• It has been proven that a child has more bones (approximately 300) than an adult. How can this be explained? Every year, the baby grows and his skeleton changes, that is, the bones grow together, forming new, larger ones.
• Imagine! The giraffe has the same number of objects.
• It is also interesting that every seven years, human bones are renewed.

Blood is the liquid that provides life

• The substance is renewed hourly. Old cells die off, and new ones are produced (by the bone marrow and spleen).
• The only part of the human body that does not have a circulatory system is the cornea of \u200b\u200bthe eye.
• It is the red color of blood that indicates that iron is the carrier of oxygen here. By the way, we can say that the blood of some species of spiders is blue. It transports oxygen - copper.
• One hundred thousand kilometers is the length of all blood vessels of a person.
• Great example! Australian resident Donor James Harrison has donated blood to over 1000 races. Saved the lives of two million children.

The outer cover of the body, which protects not only the internal organs, but also the human skeleton.

• In the dermis, there is a pigment called melanin. The color depends on this.
• The sweat glands play a very important role. They regulate body temperature. Interesting! If you think sweat doesn't smell good, you are wrong. This aroma comes from bacteria living on the surface.
• The thinnest skin is the lining of the eyelids.
• Scientifically proven to be in the sun for a long time, people lose vitamin D.

Of course, its organs are an integral part of the whole organism.

• While developing its own shocks, this organ can beat as long as there is a certain amount of oxygen inside.
• For females, this instrument beats faster than for men (about 10 strokes).
• But the ancient Egyptians thought that the heart and other organs could be moved.
• Professors at the University of Australia have shown that cats and dogs can have a good effect on the functioning of this body structure. And yet, eating chocolate also contributes to this.
• It has been established that daytime sleep kills the heart, as the pressure rises.
• People who have heart problems often succumb to depression and neuroses.

Brain

Lungs - clean and even breathing

• Why was this organ called that? Amazing! The only organ that floats on the water.
• It is also curious that the element serves not only for breathing. Also, it protects the heart, serves as an "airbag".
• How many liters of air do you think you breathe every day? About 10,000 thousand units.
• Those who smoke are most at risk for lung cancer.

The organs of vision - to live a fulfilling life

• It should be noted that the constant wearing of lenses and glasses does not affect the eyes in any way.
• A girl from Germany, Veronica, has the highest visual acuity.
• But women blink more often than men.
• If we talk about eye color, then "green" are the rarest. Note also that the Japanese attach great importance to this.
• All people are born with light gray eyes. And only then, they can acquire a different color.

Summarizing all of the above, it is clear that every organ is the main wealth in human life... Therefore, it is worth thinking and protecting. And most importantly, do everything that depends on us for good and fruitful functioning!

And so, more than 10 hours of work is behind, and I am glad to present you the most complete article, consisting of 73 the most interesting facts about YOUR body! You need to prepare yourself a little psychologically for it, since you will have to read almost 4.5 thousand words, but if you master it, you will learn everything about yourself the most interesting ... A selection, so to speak best of the best... Enjoy reading!

The human body is an incredibly complex and confusing system that still baffles doctors and scientists on a regular basis, despite thousands of years of medical knowledge. As a result, there should be no surprise that even body parts and functions that we deal with every day are fraught with strange and unexpected facts and explanations... Here are the 100 strangest and most interesting facts about the human body.

56. Ashes after a person's cremation weigh an average of about 9 pounds.

Most of what gives weight to the human body is water, which is trapped in our cells. After cremation, most of our tissues are destroyed and water evaporates.

57. Nails and hair do not continue to grow after death.

They become larger after death, but this happens only due to the fact that the skin is dehydrated and reduced, causing against this background the feeling that the nail plates and hair are enlarged.

58. By their 60th birthday, most people have lost about half of their taste buds.

You shouldn't find fault with your grandmother claiming that she's cooking worse. Older people tend to lose their ability to taste and make dishes with a much more intense flavor because they feel normal. That's why we only in his youthare able to appreciate the real taste.

59. Your eyes are always the same size from birth to death, and your nose and ears never stop growing.

When a baby looks at you with his big eyes, you should understand that they will be the same size throughout his life. But their ears and nose, however, will grow constantly.

60. By the age of 60, 60% of men and 40% of women snore.

Normal snoring, on average, is about 60 decibels, this is the noise level of normal speech, intense snoring can reach more than 80 decibels, and this is already a sound similar to what causes demolition hammer concrete.

61. The head of a child is one-fourth of its total length, but at age 25 it will only be one-eighth.

It turns out that the child will not change the size of his head as abruptly as the rest of his body. The legs and torso will lengthen, but the head will take much longer.

Most of us get hurt and sick at some point in our lives. Here are some interesting facts about how the human body reacts to the stresses and dangers of the outside world.

62. Monday is the day of the week when your risk of heart attack is greatest.

Another reason to hate Mondays! A ten-year study in Scotland found that 20% more people die from heart attacks on Mondays than on any other day of the week. Researchers speculate that this is due to a combination of excess pleasure over the weekend, as well as the stress of having to return to work, resulting in a significant increase in risk.

63. A person can go without food for longer than without sleep.

Provided there is water, the average person can survive up to two months without food, depending on body fat and other factors. But if a person is deprived of sleep, then he begins to experience radical psychological changes in personality after a few sleepless days. The longest (recorded) time spent by a person without sleep is 11 days, after which the experimenter did not sleep, but also could not speak clearly, experienced hallucinations and often forgot what he was doing.

64. A simple sunburn causes moderate damage to the blood vessels.

Studies have shown that it takes four to fifteen months for the vessels to return to their normal state. Note that the next time you feel too lazy to apply sunscreen, remember this factbefore heading outside.

65. More than 90% of diseases are caused or complicated by stress.

High stress levels (say at work) can increase the chances of giving birth to a range of serious illnesses, such as depression, high blood pressure and heart disease.

66. The human head remains conscious for about 15 to 20 seconds after it has been detached from the body.

As cruel as it sounds, after "decapitation" there may be enough blood in the head to keep someone alive and awake for a few seconds after the head has been separated from the body. Perhaps the kats guessed this, since they lifted the severed head by the hair and let her look at their body and the crowd that had gathered to watch the execution.

Interesting facts about muscles and bones

Muscles and bones are known to provide a framework for our body and allow us to jump, run, or just lie on the couch. Here are some interesting facts to think about the next time you get bored.

67. It uses 17 muscles to smile, and 43 to frown.

If you are trying to do a little workout on your face, smile, this is the easiest option for most of us.

68. Babies are born with 300 bones, but this number drops to 206 by adulthood.

The reason for this is that many of the bones of babies are made up of smaller bone components that are not yet fused like in the skull. This is necessary so that it would be easier for the child to pass through the birth canal. Bones harden and bond over time as children grow up.

69. We are about 1 cm taller in the morning than in the evening.

The cartilage between our bones clenches as we stand, sit, or do other daily activities throughout the day, causing us to get a little shorter towards the end of the day.

70. The strongest muscle in the human body is the tongue.

You should think about this fact when you eat, swallow or speak, using the language that provides the above functions all the time, so that he exercises quite a lot during the day.

71. Jawbone one of the strongest bones in the body.

Incredibly, it is the jawbone that is most difficult to break.

72. You use 200 muscles to take one step.

To take just one step, you use anywhere from 200 muscles. This is a lot of work for your muscles considering what most of us do about 10,000 steps per day.

73. Teeth cannot repair themselves.

The outer layer of tooth enamel is not, in fact, living tissue. And since it is not alive, it cannot repair itself, so the dentist has to do this work. Although, I recently read about the invention of a drug that makes teeth regenerate, but at the moment there are few materials for an article, when something becomes clear around this invention - I will write an article about this, so stay tuned for updates on, and that would definitely not be anything skip subscribe to new articles by e-mail (you will receive notifications of new articles), or even better, join the VKontakte group, and on the widget that is in the block on the right, click "Subscribe by SMS" and then you will receive free SMS, from the topic of a new article after its publication.

On this, article about the strangest and most interesting facts about the human body, ends, it took me a whole day to create it, some of the facts were previously published (in a condensed form, here they are justified), but I decided that it would be better if I collect all the most interestingin one place. All information was taken from open sources, the article used amazing photographs of Koen Hauser (Koen Hauser). I hope you found it interesting to read my work, the comments will please me very much!

Scientists - anthropologists, psychologists and others - have accumulated a huge amount of amazing discoveries. American anthropologist Dr. Stephen Juan, who teaches anthropology and social disciplines at the University of Sydney, has published a series of books "Entertaining Anatomy", where he spoke about scientific facts, funny and useful, discovered not so long ago.

And the science journalist Jennifer Eckerman, who writes for the New York Times and National Geografic, who became practically a scientist herself through close communication with scientists, wrote A Brief History of the Human Body. We took the most interesting of their books.

1. FATAL SEDUCERS AND DICTATORS ARE BORN WITH TEETH

Babies are usually born without teeth. This is what nature has ordered so that the mother, when feeding, does not reject the baby when she is breastfeeding. But here's the fact: about one in two thousand babies are born with one erupted tooth. And then his feeding turns into sheer torment for the mother. She automatically tries to feed him less often, less and generally weaned him earlier. A baby just has to fight to eat.

From infancy, a complex of what is not accepted into the world is formed in him. And then, in adulthood, he tries to conquer it. Anthropologists have established that most of the world's dictatorial leaders were born with an erupted tooth. Julius Caesar, Hannibal, Napoleon, Mussolini, Hitler ...

The pain of breastfeeding prevented mothers from giving these babies enough love. Therefore, such babies not only strive to conquer everyone and everything, but are also very jealous. They are afraid to lose love, and therefore Don Juans of both sexes grow out of them, who want to be loved by more people. So they don't necessarily go into politics. They can go to the actors or just "rustle" other people's hearts in everyday life.

2. SALAMI CREATES A SENSE OF LOVE, AND ALCOHOL IN SMALL DOSES STIMULATES CREATIVITY

In a creative environment, drinking alcohol is very common. And all why? It turns out that it stimulates the right hemisphere of the brain, which is responsible for imagination, visual images and non-standard creative moves. And at the initial stage of use, it promotes creative discoveries.

And the left hemisphere, responsible for logic and memory, associated with responsibility and accuracy of details, plunges into a daze. Therefore, an excess of alcohol creates a special kind of creativity - absolutely meaningless. Some scientists say that people who have a dominant left hemisphere, it is even helpful to sometimes relax with a glass or two and turn on the right hemisphere.

It is also useful to eat salami, which contains three times more phenylethylamine than chocolate. This is a mood-lifting substance, and with the participation of brain cells, which are designed to work when in love.

3. TIGHTLY TIGHTENED TIE AFFECTS VISION

Our eyes work harder than any other organ. To understand what kind of load they have, imagine that you have to walk 80 kilometers in a day. Yes, my legs will fall off from such an unbearable task! But the eyes do not fall off. Meanwhile, our visual acuity depends on a bunch of factors.

For example, a tie that is tightly tightened can affect your eyesight. American scientists in the course of many years of research have found that in 67% of men, visual impairment is associated precisely with a tightly tightened collar. Because this restricts blood flow to the eyes, it also affects blood pressure, which in turn also affects visual acuity.

And scientists advise to breathe deeply and evenly through the nose. This allows us to get more oxygen, which our eyes need so much. It has been proven that those who breathe correctly (through the nose and deeply) and do not smoke have better vision and last longer.

4. IF OF Laughing Frequently, DOCTORS MUST NOT WALK

We start laughing at the age of 12 weeks. Laughter is the highest form of defensiveness. Freud believed that laughter helped us cope with lustful thoughts. And Charles Darwin generally singled out laughter an important role in evolutionary development. They say it relieves stress and helps restore mental stability. Without laughter, we would all have gone mad long ago and would not have made any progress.

Dr. Norman Cousins \u200b\u200bdiscovered that laughter helps restore health. And therefore, for example, in America, in hospitals, rooms for laughter therapy and chambers of fun are open. How does this happen? Biochemically, laughter suppresses the production of cortisol, which negatively affects the immune system.

Laughter increases metabolism, stimulates muscle tissue and releases a lot of positive hormones into the blood. Laughter prevents depression, heart disease, and increases pain thresholds. And, of course, it strengthens the immune system in general. There is even a saying that if you laugh every day, you won't need a doctor.

One of the latest studies has shown that laughing significantly increases the concentration of salivary immunoglobulin A (IgA). These are antibodies associated with resistance to upper respiratory disease. In general, perhaps one day the times will come when instead of a doctor they will start sending for a clown.

5. WILL SLEEP IN TWO PHASES, LIVE WILL BECOME MORE HARMONIOUS

Does it ever happen that you wake up in the middle of the night and cannot sleep for an hour or two? Toss and turn and think that this is insomnia, and even fight it. But in fact, this is normal for the human body - a break in the middle of the night to stay awake. Anthropologist Carol Wortman of Emory University has discovered that you need to sleep in two or even three phases.

The notion accepted in the modern world that one should sleep continuously all night is wrong. For example, in cultures far from civilization, people still go to bed at sunset, then wake up at midnight and talk about everything for an hour or two, even dance, make love, laugh by the fire, meditate, pray and go to bed again. ...

But the electric light knocked our biological charts off. But in the Middle Ages, special brochures were even published for the nobility, which told what to do during the night wakefulness break. European doctors of those times, for example, recommended sleeping on the right side during the first sleep, and on the left during the second sleep. This, in their opinion, improved digestion. Animals, by the way, sleep in several stages.

Thomas Wehr, a psychiatrist from the United States, conducted an experiment. I put the subjects in natural conditions, without electricity, and began to follow their schedule. At first, they slept continuously for 11 hours, and then their sleep also split into two phases. They fell asleep for four hours, then woke up, stayed awake for two hours, and fell asleep again for four hours.

After the experiment, the volunteers began to feel more harmonious, calmer, their creativity and imagination improved. However, maybe it happened also because they lived in natural conditions and in complete safety on everything ready. In any of us, I think, in such a situation, complete harmony would come in the soul.

WHAT ELSE DID THE SCIENTISTS DISCOVER

You are healthy if you are able to understand another person.

Psychiatrists and psychologists have invented many ways to find out if a person is healthy. There are a lot of criteria for mental health. But all tests have some flaws. And the main one is that you need to know the theory well in order to apply this or that more or less serious test in life. And any testing takes time. (Some stretch out all day.)

So, scientists have derived one simple criterion for a mentally healthy person. It sounds both simple and complex at the same time: if you can accurately understand the other person's point of view, you are healthy.

Talents are revealed in the fifth ten

By the way, scientists also believe that the flourishing of a person's intellectual life, as well as his psychological abilities, are fully capable of revealing themselves in the early fifties. At forty, the most interesting thing in life is just beginning. Both men and women.

Lack of sleep and fame can die

A physiologically healthy person can die from lack of sleep. You just need to stay awake for four days. Death from lack of sleep is preceded by complete disorientation and insanity. But, by the way, the fear of death is far from the worst. Only 31% of people are mortally afraid of death. And as many as 45% are scared to death to speak in public. This is the so-called halophobia. So for almost half of the world's population, five minutes of fame can at least cause severe neurosis.

The wounded in the heart don't always die

And more interesting facts about death. There is a widespread belief that if you stab a person in the heart, he will die. But this is not the case. Doctors testify that most of those wounded in the heart survive.

And also short people live longer. How to explain this, scientists do not yet know.

4 years ago, 21:38

There is a great variety of "miracles" in the human body. Here are just a few numbers and facts about entertaining human anatomy and physiology.

• The expression "scared to death" has its own rationale. The defense mechanisms of our body in case of danger add adrenaline to the bloodstream, which leads to improved blood supply to the muscles, dilated pupils and other "improvements." However, adrenaline in large quantities is toxic to the body, therefore, in some cases, it can be fatal.
• Research has shown that in Germany, the number of heart attacks increases dramatically on the days when the national team plays in the World Cup. And this is quite logical.
• Breast cancer is not an exclusively female disease, although men also suffer from it to a lesser extent. On average, there is one “male” case for every 100 “female” cases.
• The size of the left breast in 90% of women differs from the size of the right one. In most cases, this asymmetry is small, but sometimes it can reach such a magnitude that it brings significant moral and physical inconvenience to the owner.
• Every day 1.500.000 skin particles fall off from us, which accumulate in washcloths, together with staphylococcus, which is the main "skin" bacterium and can cause big trouble if it gets inside the body.
• About three million microscopic creatures live on a square centimeter of our skin.
• Our body produces enough heat in half an hour to boil a liter of water.
• A piece of skin the size of a brand, taken from the foreskin, grows in three weeks so that the resulting grown skin is enough for three basketball courts.
• The female ovaries produce nearly half a million eggs, with only about 400 having a chance of fertilization.
• The saliva in our mouth is alkaline. If it were not for it, food residues and microorganisms in the oral cavity would quickly form an acidic environment that is extremely dangerous for the teeth.
• The dirtiest and most diverse place in our body with microorganisms is the mouth. More than 700 SPECIES of bacteria live in it, while their set, for example, among Americans and Swedes, is quite different.
• A full stomach stretches to the size of a softball (up to 10 centimeters in diameter).
• An adult has more than 5,000,000 hairs on the surface of the skin - the same number as a gorilla.
• A man's testicles produce 10 million sperm cells every day.
• If you sneeze hard enough, you can "earn" a crack in the rib. If you try to hold back the sneeze, the result will be even more sad - a rupture of a vessel in the head or neck.
• Pubic lice are most often found on the pubis itself, but in some cases, these cute animals can "frolic" on the hips, chest and even on the eyelashes.
• The human stomach is forced to renew its surface every day to replace the damaged one from gastric juice, that is, hydrochloric acid.
• A person's gastric juice is aggressive enough to completely dissolve a razor blade in a week.
• The largest organ of a person is his skin. This body covers an area of \u200b\u200bup to two square meters and is constantly being updated. Over a lifetime, a person produces about 17 kilograms of skin.
• In the morning we get out of bed with a height of almost a centimeter more than the "evening". During the day, the human spine is "trampled down" again, the gaps between the vertebral discs are again reduced, and growth is restored.
• The pressure that the heart creates in the circulatory system can raise the blood to a height of up to 10 meters.
• Surprisingly, our brain works no less in a dream. and often more than during a daytime active lifestyle.
• Globally, attention deficit hyperactivity disorder (AD / HD) is diagnosed on average in every tenth child.
• Every day we lose 85,000 nerve cells, and only 50 new ones are created.
• Babies do not have knee caps; instead, there is a special cartilage on the knees. Only by the age of 3-5 years does it harden (ossify), turning into a patella.
• A person can memorize up to 50,000 different smells.
• Out of 2,000 babies, one is born with teeth or similar formations. In some cases, they "dissolve" on their own, sometimes they are replaced by permanent ones by the age of 6 or 7 years.
• A person can live without food for several weeks, and without sleep he will not live even 12 days.
• Our brains stop growing in size after age 18.
• Among the people using the services of online marriage agencies, at least a third are already married.
• As a result of one survey conducted in the United States in 2004, it turned out that 60% of men agree to have sex for money, that is, to engage in prostitution, while 16% of them are satisfied with an amount of $ 150 or less.
• Although the penis is not a bone, it can be broken. This usually occurs when the penis is in an erect state and force is applied to it in an unusual direction. At the same time, a crackling sound can be heard, after which the penis swells and remains in a "broken" shape. This can be corrected most often only by surgery.
• 70% of people pick their noses, thirty of them do not interrupt this exciting process even while eating.
• Only one tenth of the cells in our body are actually ours. The remaining 90% are microorganisms that live inside us and on our surface.
• At the beginning of our life, any of us consisted of a single cell for about 30 minutes.
• A smoked cigarette shortens the life of the smoker by 11 minutes.
• The quarter of a million pores on our feet produce nearly a quarter of a cup of sweat every day.
• We produce enough saliva to fill two swimming pools in a lifetime.
• Our liver is the largest gland (weighing an average of 1.2-1.5 kilograms), and it performs at least 500 vital functions, and in addition, it has the ability to regenerate. If a fragment is cut off from the liver, it “grows back” over time to its original size.
• People living in the city produce more earwax in their ears than their rural compatriots.
• Believe it or not, fresh urine is cleaner than saliva or the surface of our skin. The urine of a healthy person is practically free of harmful bacteria.

The human body is a complex and intricate system that has been studied by the best minds for several millennia. And this is an extremely interesting fact, because, despite this, our body is able to surprise even doctors, not to mention people without deep anatomical knowledge.

Brain

The impulses from the receptors to the brain travel at an astonishing speed of 275 kilometers per hour.

Our brain needs energy to work, commensurate with the energy of an ordinary light bulb.

The electronic equivalent of the memory capacity of the human brain can reach thousands of terabytes.

About 20% of the air from the blood stream goes to the brain.

The brain is more active at night when we are sleeping than during the day when we are awake.

The higher the intelligence, the more dreams you see.

Neurons and brain tissue are capable of regeneration throughout our life.

Different types of neurons transmit information at different rates.

The brain is unable to feel pain, it lacks pain receptors.

Brain tissue is four-fifths fluid.

Nails and hair

Women's hair is on average twice as thin as men's, and hair thickness and coarseness vary by race.

Beards and mustaches grow faster than all other hairs.

The average hair can support the weight of a hundred grams of chocolate.

Toenails grow 4 times slower than fingernails.

Every day a person drops from fifty to a hundred hairs.

Blondes have the most hair, but they are thinner.

The nail on the middle finger grows the fastest, probably because this finger is the longest.

There is a lot of hair on the human body, as much as in our closest primate relatives, just not all of them are so clearly visible.

One hair can remain in place for an average of three to seven years.

Human hair decomposes so slowly that it is virtually indestructible.

Before baldness becomes noticeable to others, a person loses more than 50% of the hairline.

Internal organs

The heartbeat generates enough pressure for the blood to flow over a distance of 9 meters.

The small intestine is the largest internal organ in the human body.

The surface area of \u200b\u200bone human lung is approximately one-fifth of a football field.

Stomach acid is capable of dissolving thin blades.

The total length of the human circulatory system is 96,500 kilometers. For comparison, the circumference of the Earth is only 40,000 kilometers.

The stomach lining is renewed every three to four days.

The heartbeat of women is faster than that of men.

Scientists have counted about 500 useful functions that the liver performs.

The diameter of the aorta is the same as the diameter of the garden hose.

The left lung is slightly smaller than the right due to the heart on the left side.

A person is able to survive without a huge part of his internal organs, such as the spleen, 75% of the liver, 80% of the intestines, stomach, kidney, lung and all organs of the pelvic region. Of course, living without most of the internal organs is not easy, but possible.

The adrenal glands change their volume throughout a person's life.

Basic body functions

The flow of air during a sneeze moves at a speed of 160 kilometers per hour.

When coughing, the air speed is reduced to 95 km / h.

A full bladder is the same size as a large grapefruit.

Almost 75% of stool is water.

Women blink twice as often as men.

Earwax is produced to keep your ears healthy.

There are about five hundred thousand sweat glands on the feet, which are capable of secreting half a liter of sweat daily.

For a lifetime, a person produces so much saliva that it can fill two Olympic pools.

The average person experiences bouts of flatulence about 14 times a day.

Reproduction

The largest cell in the human body is the egg, and the smallest is the sperm.

Teeth begin to appear six months before the baby is born.

Fingerprints appear in the embryo at three months.

Pregnant women at the beginning of pregnancy have frequent dreams about frogs, house plants and worms.

Almost all babies are born with blue eyes.

With a comparative weight ratio, a newborn baby is stronger than a bull.

One in two thousand babies is born with an already grown tooth.

Each of us spent half an hour of our existence in the form of a single-celled creature.

Most men get erections several times a night.

Sense organs

After a hearty meal, your hearing becomes worse.

About one third of humanity has perfect vision.

Unlike men, women have a more developed sense of smell.

If a product cannot dissolve in saliva, we cannot taste it.

A person is able to remember about 50 thousand different smells.

Even the slightest noise causes the pupils to dilate slightly.

Each person has their own scent, which is completely unique; only twins do not have it. The smell of identical twins is identical.

Old age and death

The ashes of a cremated body weigh an average of 4 kilograms.

Nails and hair do not grow after death, they appear longer due to the fact that the muscles and skin dry out.

By the age of 60, people have lost about half of their taste buds.

The size of the eyes does not change at all, but the nose and ears do not stop growing until death.

By the age of 60, more than half of men and slightly less than half of women begin to snore in their sleep.

The person remains conscious for 20 seconds after decapitation.

Disease

Most often, according to statistics, heart attacks happen on Monday.

A person can survive without food longer than without sleep.

An ordinary, mild sunburn can severely damage blood vessels.

Nearly 90% of diseases can be either caused or complicated by stress.

Muscles and bones

For a smile, you need to use 17 muscles, and for a frown, 43.

In the morning we are 1 cm taller than before going to bed, due to the fact that the upright position puts pressure on the spine.

At birth, the number of bones is 300. Over time, some of them grow together, and in an adult there are fewer of them - 206.

The hardest bone is the jaw.

The strongest muscle in the human body is the tongue.

To take one step, a person must use 200 different muscles.

A tooth is the only part of the body that cannot heal itself.

It takes twice as long to lose newly acquired muscle as it does to gain muscle mass.

Bone is stronger than some steel alloys.

Of the 206 bones in the human body, 52 are on the feet.

Cells

About 16 million bacteria live on every square centimeter of skin.

The outer skin of a person is renewed every 27 days.

The human body makes 300 billion cells every day.

In our body, about 300 million cells die every minute.

We shed about half a million pieces of dead skin every hour.

A person's tongue print is as unique as a fingerprint.

There is enough iron in the human body to fuse a nail 7 centimeters long.

The most common blood type is the first. About half of the world's population has this type of blood.

The color of the lips is so bright because the capillaries in them are located right under the thin layer of skin.

miscellanea

The size of a baby's head is 25% of its entire body length. An adult's head is only one-eighth of its height.

The colder it is in the bedroom, the more likely you are to have a nightmare.

Tears and mucus contain an enzyme that can break down the membranes of many bacteria, thus protecting us from infection.

In half an hour, the human body generates enough energy to bring 4 liters of water to a boil.

Ears produce more sulfur when we are scared.

You can't tickle yourself.

The span of the arms usually matches the height.

Humans are the only representatives of the animal kingdom capable of crying over emotions.

According to statistics, right-handers live 9 years longer than left-handers.

Women burn calories more slowly than men.

Koalas and primates also have unique fingerprints.

The depression between the nose and the upper lip is called the nasal groove. For what it is to us, scientists have not determined.