Incredible facts about the human body. Muscles and bones

Do you know that…
In the morning, a person is about a centimeter taller than in the evening. The cartilage between the bones shrinks due to standing, sitting, etc., which makes us a little lower at the end of the day.
The strongest bone human skeleton- jaw. And the most strong muscle- language. One of the strongest are also chewing muscles. The strength of their pressure in the normal state reaches from 9 to 15 kg, and when a person eats solid food (for example, nuts), the pressure of these muscles increases to 100 kg.
Bones are stronger than some types of iron. This does not mean that bones cannot be broken, as they are much less dense than iron. The tensile strength of bones is 3.5 times less than that of iron. Iron is much heavier than bone, but a 1 kilogram bone is stronger than iron of the same weight.
The tooth is the only part of the human body that cannot regenerate. The surface of the tooth is covered with enamel, which is not living tissue. And this means that she cannot recover, which provides dentists with work.
about half of the human bones are in the feet and wrists.
The human spine consists of 33 or 34 vertebrae.

Preparations for the health of your bones:

- The drug contains a complex of peptides isolated from bone and cartilage tissues of young animals. The resulting substances selectively act on human cells, normalizing their metabolism and regulating the functions of the joints and spine.

Sigumircomprehensively restores the functions of the musculoskeletal system with pathological conditions leading to disorders in the cartilaginous or bone tissue, as well as after various past illnesses, you can check its price and buy it at the Revitalization and Health Center. The drug is also prescribed for diseases of the bones, joints due to malnutrition and aging.

The Revitalization and Health Center sells innovative drugs at wholesale prices and with prompt delivery.

· Arthrosis and arthritis,

rheumatism,

Osteochondrosis,

Osteoporosis,

· Gout.

- is a peptide complex containing amino acids that contribute to the normalization cartilage and musculoskeletal system.

In a clinical study, the effectiveness of Cartalax in comprehensive prevention and treatment of patients suffering from osteochondrosis of the spine, osteoarthritis, osteoporosis, after injuries and fractures, as well as in the prevention of sclerotic and degenerative processes in the spine and joints in elderly and old age.

The drug is combined with any means used to treat this group of diseases.

arthrosis and arthritis

osteochondrosis

osteoporosis

degenerative-dystrophic diseases of the joints, limbs and spine

rheumatism

consequences of injuries of the joints and limbs

arthropathy of various etiologies

gout

systemic prevention of osteoarticular injuries in sports highest achievements;

systemic diseases connective tissue

preoperative and postoperative periods during operations on the joints

conditions after extreme physical exertion

prevention of degenerative processes in the spine and joints in elderly and senile people

- Peptide complex for bone tissue. Contains peptides - cartilage.

prevention of premature aging

fractures

osteoporosis

human bones

Strength is the ability of a material to withstand an applied external breaking force. The strength limit of bones depends on the architectonics and density of the bone tissue itself. The shape of each bone human body(macroscopic design), determined by the need to withstand the greatest load in a certain part of the skeleton. If there is not enough calcium in the human body, then the bones are easily compressed, bent and twisted. And with an excess of calcium, the bones become brittle.

Human bones are very strong, they are better able to withstand the load in compression than in tension. The compressive strength is 1.5 times higher than the tensile strength. This is due to the fact that the earth's force of gravity constantly acts on the body.

The tensile strength of bones exceeds 3 times the tensile strength of wood (with a longitudinal load on the fibers) and 9 times that of lead. And in compression - 5 times the tensile strength of wood and 7 times the tensile strength of concrete. 1 square mm of bone tissue in cross section can withstand a tensile load of up to 12 kg and up to 16 kg in compression.

Humans have over 200 bones

It is considered the strongest femur, its strength is 132 MPa in tension along the longitudinal axis and 58 MPa perpendicular to it. Under the action of a compressive force, the strength of this bone is 187 MPa and 132 MPa, respectively. That is, it will take about 3000 kg to crush this bone with pressure.

Bone tensile strength

In an adult healthy person the tensile strength of the femur is the same as the strength of cast iron. This bone is able to withstand a bending load of up to 2500 N.

According to studies conducted in the last century, the femur can withstand a load of 7787 Ncm square. and 5500 Ncm sq. for compression and tension, respectively. And the tibia is 1650 Ncm square, and this can be compared with the mass of more than 20 people.

Bogatyr Dmitry Khaladzhi constantly surprises with new records. He is moved by multi-ton cars, he easily bends horseshoes and nails, lifts unimaginable weights. How such huge loads affect his body. We asked Dmitry this question during an online conference.

You have such dangerous tricks. Do you get tested often? How do these huge physical loads affect your body?

The last time I was examined was a little over a year ago at Moscow Hospital No. 63. This is a hospital where members of the Russian Olympic team and cosmonauts are examined and treated. This took place as part of the shooting of the film. They shot a documentary about phenomenal people and I was offered to be examined there. Still, we decided to get to the bottom of what is the reason for performing certain power numbers, why I stay alive, why I don’t break down, etc. There I was examined completely: heart, liver, kidneys. The survey showed that everything is working normally. Examined the composition of adipose tissue, general analysis blood, doping test, bone index. By the way, there was an interesting moment: when they examined the bones, it turned out that the level of my boneiness (I’m not saying this medical terms), my boneiness index is higher than the existing table. I think that in preparation for certain strength tricks, not only muscles, tendons, but also bones are trained. Our bone is porous, but at large physical activity(for example, in those people who are engaged in interrupting objects with the edge of the palm), these pores are filled with bone tissue and the bone becomes much stronger and heavier. Those. Something similar happened and is happening to me.

The weather is so bad now… Do you suffer from SARS? What are you treating?

The last time I was ill and lay with a temperature in childhood. I think that people get sick a lot because they have a weakened immune system. People have become susceptible to all kinds of SARS. Nobody knows how old AIDS is. But people didn’t get sick with it before, maybe for the reason that they had such strong immunity that he just didn't hit them. If people used to be engaged in heavy physical labor without exception ... Even 100 years ago, for example, a peasant, when plowing the land, every day during the plowing period, walked behind a plow up to 35 miles. Imagine what a colossal load a person received. And then when he mowed, he also had to walk the same number of miles, only with a scythe. Those. people were physically very hardened. And so they didn't get sick. There were no such a huge number of influenza strains, a person simply coped with them with his own immunity. I could advise everyone modern people temper. It is not necessary to dive into the hole, it is not necessary to pour cold water. Just do not wrap up to the very eyes, but dress a little lighter to get used to the cold. I am a regular herbalist. I constantly drink some herbs throughout the year, which helps the body. Not medically, but naturally traditional medicine. It is not some kind of witchcraft or witchcraft. modern medicine it quite accepts.

Do you know about herbs or do you consult someone?

I understand myself. There are people with whom I consult. But what exactly is necessary for me for everyday life, I understand herbs.

Watch the full video version of the online conference in Dmitry Khaladzhi

VIVA CALCIUM, or how to avoid the fate of Semyon Semenych

"I slipped. I fell. I lost consciousness. I woke up - gypsum," - so simply, in one phrase, Semyon Semenovich Gorbunkov, the hero of a popularly beloved film, explained to others his broken arm. Remembering all the adventures of the hero that followed the ill-fated fracture, one involuntarily wants to smile and joke. However, when this happens in real life, we are no longer joking. We begin to look for the answer to the question: "Why did this happen to me?".

So why do some people have very strong bones, while others are fragile? Why boxers, for example, can withstand the strongest blows, while others break their arms and legs just by falling out of bed at night?

The main reason is the amount of calcium in the body: the lower the level of calcium, the more bones are subject to destruction. The state of bone tissue is also influenced by factors such as lifestyle and nutrition. To maintain healthy bone tissue, a complex of 20 different trace elements is needed. And with a chronic lack of these substances, osteoporosis develops.

Osteoporosis - age-related disease, as a result of which the bones lose calcium, the skeleton becomes thinner, and the likelihood of fractures increases.

Loss of calcium occurs during long period, imperceptibly, without external manifestations. In most cases, the disease is detected after the fracture has occurred.

The process of restoration and renewal of bones goes on constantly - both day and night. Bone mass in adults peaks at age 30, after which it begins to decline, and with age, bone mass becomes lighter and lighter.

Studies show that by the age of 50, many of us face real danger lose up to 25% of bone mass due to osteoporosis.

Every seven to ten years, the skeleton of an adult is completely renewed. This means that if you are now thirty, your skeletal system has changed for the third or even fourth time. The question naturally arises: if our bones are renewed and replaced, then why do not new teeth grow in place of the torn teeth?

Don't be fooled by the statement that the human skeleton is renewed every 10 years. "New" does not mean "equal". The density of bone tissue decreases every year, the new structure gradually weakens, the bones become lighter and more fragile. Compare this process with age-related changes your skin, and you will understand what is happening with your skeletal system in fact!

WHO IS AT RISK?

Osteoporosis can develop in anyone, but it happens more often with women than with men, since the bone mass in women is much less developed. With age, due to hormonal changes, the amount of calcium in the body decreases significantly. Today, one in three older women suffer from brittle bones.

But in recent times osteoporosis, a disease characteristic of the elderly, has become much younger and is now often found in young people. According to studies, one in five girls consumes much less calcium with food than they need.

How to prevent the development of osteoporosis?

The main culprits of the disease are a diet poor in milk proteins, the abuse of coffee and carbonated drinks, and a lack of calcium. Millions of people consume huge amounts of calorie-free food, the calcium content of which is reduced or even reduced to nothing. Coffee, carbonated drinks, alcohol, smoking, red meat and salt are true calcium thieves and increase the risk of early osteoporosis. Therefore, after 35 years, you should reduce coffee consumption to 2 cups a day, perform 20-minute daily physical exercise and include calcium in your diet.

Calcium can be easily obtained from food ... Ideally, yes, but, unfortunately, coffee and alcohol destroy calcium stores, and foods with excessive fat and fiber content slow down the process of its absorption by the body. Starvation, strict diets and irregular diet also lead to the loss of this vital mineral. Only 20-30% of the calcium obtained from food is absorbed by the body, the rest is excreted in the process of natural self-purification. But vitamin D can significantly increase the absorption of calcium by the body.

Calciferol- the second name of vitamin D. Its main function is the regulation of calcium metabolism in the body. With the assistance of vitamin D, calcium is absorbed in the intestines, absorbed and forms the skeleton. The same vitamin promotes the release of calcium from the bones when there is a shortage of it in the blood. Taking vitamin D in combination with calcium slows down the development of osteoporosis. Vitamin D is produced in the body by exposure to sun rays. Those who rarely go outside, as well as those who live in regions with unfavorable natural conditions, you should remember the need to replenish the body's supply of vitamin D.

The need for calcium remains in humans throughout life. Every day, an adult should consume at least 800 mg of calcium (this approximately corresponds to its content in 1.2 liters of milk). Women, according to nutritionists, need one and a half times more of this mineral so that their bones are always strong. A woman's need for calcium especially increases during pregnancy and breastfeeding.

calcium in nature

Calcium is a natural trace element found in abundance in the bowels of the earth and in living organisms. In nature, calcium is always found in various natural compounds. One of these most common compounds is calcium carbonate, or chalk. It can be used in food.

calcium in the body

A person cannot do without calcium. 99% of all calcium in the body is in the bones and only 1% is in the blood. However, the value of this percentage cannot be overestimated. It affects the rhythm of the heart, muscle contraction, the transmission of information through nervous system regulates blood clotting. Circulatory system cannot do without calcium, so as soon as the body begins to lack calcium, it borrows it from the bones. If such borrowing occurs constantly, it leads to the development of osteoporosis - the bone tissue becomes thinner and becomes dangerously fragile.

Sources of trace elements important for bone health:

Calcium- cheese, sardines, salmon, broccoli, tofu, beans and sesame seeds, green vegetables.

Magnesium- dates, lemon, grapefruit, sprouted wheat grains, nuts, seeds.

Vitamin D- herring, mackerel, salmon, sardines, tuna.

Zinc- crabs, lean meat, sesame and pumpkin seeds, nuts, brewer's yeast, sardines, barley, oatmeal.

Vitamin C- guava, Brussels sprouts, pepper, kiwi, papaya, mango, broccoli, strawberry.

Bor- green leafy vegetables, fruits.

Vitamin K - cauliflower(raw), kale, peas, tomato, broccoli, Brussels sprouts, beans, yogurt.

Experts advise...

The best way strengthening bones - regular exercise with weight lifting, running. Not less than effective tool is a daily 30-minute brisk walk.

The sun: Sunlight helps the body produce vitamin D, which is needed for calcium absorption.

Food: Eat more vegetables, fruits, salads and reduce your intake of animal proteins. This will support normal level acidity in the stomach. It is advisable to replace the meat with fish.

The drinks: Commonly found in carbonated drinks significant amount phosphates, which promotes the leaching of calcium from the bones. Since carbonated drinks adversely affect the process of bone formation, children should be limited in their use.

Basic acids: Omega-3 fatty acids in fish, sunflower and safflower oil promote calcium absorption.

Restriction of sugar, cigarettes, alcohol: sugar, nicotine, alcohol cause an imbalance of estrogen / progesterone in the body, which, in turn, negatively affects the process of bone renewal.

"Take care of your hand, Senya," Gesha Kozodoev admonished Semyon Semenovich. And he was right, but it's too late. Protect bone tissue now to avoid anecdotal but unpleasant situations in the future. They are actually easy to avoid. You just need to take care of your body and balanced diet. How to do it - you now know.

Pavel Filatov Thinker (5862) 7 years ago

Ah teeth not correctly quite cats to call. besides, only enamel is hard of them, but at the same time it is very fragile. the most strong bone, as far as I remember - femoral - with a vertical load, it sustains about 1,5 tons. well, fragile, navrenoe, in the middle ear - a hammer, an anvil and a stirrup

Andreev Andrey Thinker (7745) 7 years ago

In my opinion, the cranial bone is the strongest, and the heel bone is the most fragile.

Lida Thinker (7800) 7 years ago

Functions musculoskeletal system. The skeleton and muscles are the supporting structures and organs of human movement. They perform protective function, limiting the cavities in which internal organs. So, the heart and lungs are protected chest and muscles of the chest and back, organs abdominal cavity(stomach, intestines, kidneys) - the lower spine, pelvic bones, muscles of the back and abdomen, the brain is located in the cranial cavity, and spinal cord- in the spinal canal.
(Increase)
Bone. The bones of the human skeleton are formed by bone tissue - a type of connective tissue. Bone tissue is supplied with nerves and blood vessels. Its cells have processes. The intercellular substance makes up 2/3 of the bone tissue. It is hard and dense, reminiscent of stone in its properties.

Bone cells and their processes are surrounded by tiny tubules filled with intercellular fluid. Through the intercellular fluid of the tubules, the nutrition and respiration of bone cells occurs.

The structure of the bones. The size and shape of the bones of the human skeleton are different. Bones can be long or short.

Long bones are also called tubular. They are hollow. Such a structure long bones provides both strength and lightness. It is known that a metal or plastic tube is almost as strong as a solid rod of the same material equal in length and diameter. in cavities tubular bones there is a connective tissue rich in fat - yellow bone marrow. (Increase)

The heads of tubular bones are formed by a spongy substance. The plates of bone tissue cross in the directions in which the bones experience the greatest tension or compression. This structure of the spongy substance also provides strength and lightness of the bones. The spaces between the bone plates are filled with red bone marrow, which is hematopoietic organ.

short bones composed mainly of spongy matter. They have the same structure flat bones e.g. shoulder blades, ribs.

The surface of the bones is covered with periosteum. It is a thin but dense layer of connective tissue fused with bone. The periosteum contains blood vessels and nerves. The ends of the bones, covered with cartilage, do not have a periosteum.
(Increase)

Bone growth. During childhood and adolescence, human bones grow in length and thickness. The formation of the skeleton ends by 22-25 years. The growth of the bone in thickness is due to the fact that the cells of the inner surface of the periosteum are dividing. At the same time, new layers of cells are formed on the surface of the bone, and around these cells - intercellular substance.

Bones grow in length due to the division of cartilage cells that cover the ends of the bones.

Bone growth is biologically regulated active substances such as growth hormone secreted by the pituitary gland. With an insufficient amount of this hormone, the child grows very slowly. Such people grow no taller than children of 5-6 years of age. These are dwarfs. (Increase)

If in childhood the pituitary gland produces too much growth hormone, a giant grows up - a person up to 2 m tall and above.

With an increase in the function of the pituitary gland in an adult, some parts of the body grow disproportionately, for example, fingers, toes, and nose.

In adults, the bones do not lengthen or thicken, but the replacement of old bone with new bone continues throughout life. The bone substance is able to rebuild under the influence of the load acting on the skeleton. For example, bones thumbs the feet on which the ballerina rests are thickened, their mass is lightened due to the expansion of the internal cavity.

How more load on the skeleton, the more active are the processes of renewal and the stronger the bone substance. Properly organized physical labor, physical education at a time when the skeleton is still being formed, contribute to its development and strengthening.

The composition of the bone. Bones are formed by organic and inorganic substances. The value of mineral and organic substances is easy to find out by doing a simple experiment. If a bone is ignited for a long time, then water is removed from it,

Irina Kovalenko Enlightened (35892) 7 years ago

The strongest is the teeth. the most fragile-any with osteoporosis!

mulik Connoisseur (263) 7 years ago

the strongest is the bone on the skull - the frontal. the most fragile somewhere in the neck

Pan_Arkas Student (155) 7 years ago

Head, that's where the power! And the most fragile is the spine: (((

Irina Pro (558) 7 years ago

about the strongest bone, I completely agree with Dr. Filatoff, and the most fragile, in my opinion, is the nasal septum. Men, do you agree with me?