Know little about body organs

Skin ~ ~ ~ What is the structure and function of normal human skin? Why is skin the largest organ of human body? The most basic unit of the human body is the cell. Many similar cells form tissues (such as epithelial tissues and muscle tissues), and then constitute organs with certain physiological functions (such as heart, kidney, liver, etc.). ).

The human body is covered with skin, but what we can see is actually the skin of the whole body. The surface skin area of adults can reach 1.5-2.0 square meters, and that of newborns is 0.5 square meters. Whole body skin accounts for about 16% of body weight.

The skin is soft and tough, which can cushion the external impact and secrete sebum and sweat. When they are mixed together, a natural skin care product is formed. Under the cover of this protective film, the skin is healthy, smooth and beautiful, and at the same time, it can prevent excessive evaporation of water in dry environment and prevent external water from spreading to subcutaneous tissue in humid environment. In hot weather, the skin can excrete sweat, regulate body temperature after evaporation, and help the kidneys excrete metabolites in the body when they are nervous and tired.

Skin has sensitive sensory functions such as warmth, touch and pain. At ordinary times, the skin can also absorb a small amount of oxygen from nature, and under the action of sunlight, it can self-synthesize vitamin D necessary for human metabolism and promote the development of bones.

Bacteria on the surface of healthy skin are difficult to survive, let alone invade the human body, and the skin also plays an immunomodulatory role. The above content is enough to prove that the skin is the largest organ of the human body.

Because of this, if the surface area of burned body reaches 30%, skin dysfunction may occur, and more than 50% of large-area burns will cause skin failure.

2. Health tips

The World Health Organization has put forward ten health standards:

1, have enough energy to cope with the pressure of daily life and work calmly.

2, optimistic, positive attitude, willing to take responsibility, not picky about the details of things.

3. Be good at rest and have a good sleep.

4, strong adaptability, can adapt to various changes in the environment.

5, can resist the common cold and infectious diseases.

6. Proper weight, even body, and coordinated posture, head, shoulders and arms.

7, bright eyes, sharp reaction, eyelid inflammation.

8, teeth clean, no cavity, no pain, normal gum color, no bleeding.

9, the hair is shiny, no dandruff.

10, the muscles and skin are elastic and easy to walk.

3. Health tips

Four elements of health: first, adequate sleep.

Because every hour corresponds to the detoxification and recovery of an organ in the human body, let's start at night: Shihai: Sanjiao Meridian is in the season from 2/kloc-0 to 23: 00 in the evening, which is the time for the immune system (lymph) to detoxify. During this time, you should be quiet or listen to music. Triple energizer refers to the omental region connecting the internal organs.

The triple energizer must be unobstructed, or you will get sick. Zi Shi: gallbladder meridian is in season, which means from 1 1 at night to 1 the next morning. At this time, the gallbladder meridian is in season, and the detoxification of the gallbladder meridian needs to be carried out while sleeping.

There is a particularly strange phenomenon in our life. After dinner at night, I fell asleep at eight or nine o'clock, but I woke up at 1 1, so now many people are used to starting work after 1 1. Some people 1 1 always want something to eat at night, so they look for something to eat in the house. Why? This is because just at this time, the sun be the spirit begins to sprout, so a very important principle is that it is best to go to bed before 1 1 so as to supply this vitality slowly. People's sleep has a great relationship with people's life span, so sleeping is to raise yang.

Children are the darkest time of the day, and the yang begins to grow. There is a saying in Huangdi Neijing that "all the eleven zang's are taken from bravery".

Depending on the growth of bile, bile will also grow, and the whole body's qi and blood will also rise accordingly. It's important to keep sleeping all day when you are young.

Ugly time: in the season of liver meridian, ugly time refers to 1 till 3 am. At this time, the liver meridian is in season, and the detoxification of the liver needs to be carried out while sleeping. At this time, you must have a good sleep, otherwise the liver can't be raised.

At this time, the sun is the spirit, and this time is called ugliness. What is ugliness like? Bad words are like strangled hands, just like at this time, although the sun is a spirit, you must restrain and control it, that is, you must rise and fall. Therefore, it is necessary to raise liver blood, and 1 3 should sleep well.

Yin Shi: The lung meridian is in season. Yin Shi means that from 3 am to 5 am, the lung meridian is in season, and the lungs are detoxified. This is why people who cough the most during this time, because the detoxification has reached the lungs; Do not use cough medicine, so as not to inhibit the elimination of waste.

This time is the beginning of people's transformation from static to dynamic, and it is a process of transformation, which requires a deep sleep. When people sleep the most, it should be from 3 to 5 o'clock. This time is precisely the process of human qi and blood changing from static to static, which is completed through deep sleep.

Old people with poor heart function do not advocate morning exercises, and people with heart disease must get up late and get up slowly, and do not advocate morning exercises. It's cloudy at night, so you can exercise.

In the morning, when the sun is the soul, let it grow. Shi Mao: Shi Mao, the large intestine meridian is in season, which means 5: 00 to 7: 00 in the morning. At this time, the large intestine is in season, and the large intestine is detoxified. You should go to the toilet to defecate.

At this time, the sky is basically bright, the Tianmen is open, and it is normal to wake up at five o'clock. At this time, it is necessary to defecate normally and discharge the garbage toxins.

This time represents the opening of an account, that is, * * is about to open, so we should get into the habit of defecating in the morning. Poor defecation, hold your breath and don't make a fist.

Traditional Chinese medicine believes that the lung and the large intestine are exterior and interior, and only when the lung is full of qi can there be stool. Okay, sleep is over.

Not during the day Two: optimistic attitude.

Laugh less than ten years. There has been a cloud since ancient times. Anger hurts the liver and anger hurts the kidney. No matter what happens, treat it with a normal heart. Three: moderate exercise.

Health lies in activity, and life lies in exercise. Exercise can increase health, enhance immunity and enhance organ vitality.

Four: a balanced diet. This is more complicated and involves a wide range.

Tell me about seven nutrients that people need. 1: protein. Fish, meat, beans, eggs and milk are all foods rich in protein.

2: carbohydrates. Also known as sugar, rice, white flour, millet, corn and sweet potato are all sugar.

3: fat. Carbohydrate can be converted into fat without being consumed by human body.

In addition, meat is also the best supplement to fat. 4: vitamins.

As the name implies, the element that sustains human life. All foods contain various vitamins.

Vitamins include: vitamin A, vitamin B, vitamin C, vitamin D, vitamin K, vitamin E, etc. 5: minerals.

Everyone will know this. Calcium.

Magnesium. Zinc.

Copper. Manganese.

Iron. Chromium.

Wait a minute. 6: cellulose.

1 There are two kinds of water-soluble cellulose, 2 lignocellulose. Water-soluble cellulose plays an important role in cleaning magazines in blood vessels; Lignocellulose plays an important role in cleaning the large intestine.

7: water. Water is the source of life.

Boil water in moderation, and master the principle of small amount and many times. Working hours of body organs corresponding to the time of 12: The triple energizer meridian is from 2 1: 00 to 23: 00 in the evening. When the triple energizer meridian is in the season, it is time for the immune system (lymph) to detoxify, so be quiet or listen to music during this time.

Triple energizer refers to the omental region connecting the internal organs. The triple energizer must be unobstructed, or you will get sick.

The word "sea" in ancient Chinese means the rebirth of life, so if you want your body to have a good starting point, you must have a good sleep from this moment on. For the elderly, it may be difficult to sleep, but no matter what way you take, try to fall asleep before 10: 30 in the evening.

Zi Shi: gallbladder meridian is in season, which means from 1 1 at night to 1 the next morning. At this time, the gallbladder meridian is in season, and the detoxification of the gallbladder meridian needs to be carried out while sleeping. There is a particularly strange phenomenon in our life. After dinner at night, I fell asleep at eight or nine o'clock, but I woke up at 1 1, so now many people are used to starting work after 1 1.

Some people 1 1 always want something to eat at night, so they look for something to eat in the house. Why? This is because just at this time, the sun be the spirit begins to sprout, so a very important principle is that it is best to go to bed before 1 1 so as to supply this vitality slowly. People's sleep has a great relationship with people's life span, so sleeping is to raise yang. Children are the darkest time of the day, and the yang begins to grow.

There is a saying in Huangdi Neijing that "all the eleven zang's are taken from bravery". Depending on the growth of bile, bile will also grow, and the whole body's qi and blood will also rise accordingly.

It's important to keep sleeping all day when you are young. Ugly.

4. Ten biological tips for human body

1: The circumference of two fists is the circumference of the neck.

The length of seven feet is the height of the body. 3. The heartbeat is 2.5 billion to 3 billion times in a lifetime.

4: Swallow saliva about 580 times a day. 5. People will die if they don't sleep for 0/0 day.

6. People lack inspiration in the afternoon, are smarter at night and are more creative when taking a shower. 7: People's left and right nostrils breathe once every three hours, and they only know when they catch a cold.

8. Muscle can be the engine of human body. 9: Insulin that helps digestion is active in the morning, so be sure to have breakfast.

10: Finger flexion and extension 2500 times in a lifetime. 1 1: The average person urinates every year 12 hours.

12: The length of the intestine is 4-5 times of the height. 13: It only takes 20 seconds for blood to circulate once a week.

14: The length of blood vessels can circle the earth twice. 15: The human brain remembers a computer with a capacity of 4G.

16: People's sleep cycle is 90 minutes, and staying in bed for 30 minutes will enter the next cycle. 17: Most of the natural delivery time is from 5 pm to 6 pm, and more than 60% are delivered around 6 pm.

18: At six o'clock in the afternoon, the human body's secretion of adrenaline reached its peak, and at this time it was most capable of coping with difficulties. 19: The left ear is controlled by the right brain, which dominates emotions, so the left ear is more agile than the right ear when receiving sweet words.

20. The original division of labor makes women's vision almost six times that of men. Men like to stare at a goal, and their horizons are farther, but they are not as broad as women's. 2 1: People share the same brain area in sex color, money and delicious chocolate, which makes people influenced by sex color in money choice and take risks in a much larger proportion.

22: Intelligence is slower than physical aging. 23: Exercise at night. At this time, people's taste, vision and hearing are more sensitive, their coordination ability is stronger, and their heart rhythm and blood pressure are relatively stable.

The number of heartbeats is a fixed number in a person's life. 25: People are resourceful when dealing with negative information that flashes in the subconscious, such as danger, despair, violence, etc.

26: People can fall asleep in an average of 7 minutes. 27: I can't keep my eyes open when sneezing.

28: The brain is more active when sleeping than when watching TV. 29: The fingernails of the thumb are the slowest and the fingernails of the middle finger are the fastest.

Sleeping consumes more calories than watching TV. 3 1: The eyes were big when they were born, and they are still big now, but the nose fish's ears have been growing.

32: The tongue has ten thousand taste buds. Right-handed people live nine years longer than left-handed people.

Tongue prints are the same as fingerprints, and everyone is different. If the moon is directly above people, people will be thinner.

People use the bathroom six times a day on average. Every square inch of human skin contains 20 feet of blood vessels.

38: There are 360 bones at birth and only 206 bones in adulthood. 39: Beard is the fastest growing human hair. If you don't transform it, you can grow 30 feet in your life.

40: When sneezing. The human heart will stop beating about 1 millisecond.

4 1: Right-handed people can live about nine years longer than left-handed people. The maximum noise that people can tolerate is: 1.20 dB. What is the sound that people can hear? Hertz: 20-20000 Hertz. The hearing range of human ear is: 20hz-20000Hz. What is the highest value of the frequency range of sound waves that people can generally hear? Hertz: 20-20000 Hertz. The human brain needs to be mature: 3 years of saliva: when the food eaten by weakly acidic people passes through the digestive tract, where does it stay the longest? The bile of colon people is: in which part of the brain is the logical thinking activity of yellow people carried out? Where does the salty taste in the tears of left-brained people come from? How does the sense of smell in blood change with age? Which part of the tongue is most sensitive to sweetness? The reason why people on the tip of the tongue sweat during exercise is to keep their body temperature normal. When breathing, the lungs are: How deep can a passive stretching person dive? 30 meters has 42 facial expression muscles. How many muscles are activated first when we smile? How many pairs of ribs do four people have? 12 What are the joints with the largest range of motion? Shoulder joint When did the first heartbeat of the human body start? Where is the most distributed sweat gland in the human body when the embryo develops to the third week? * *? The most sensitive: fingertip The longest organ in the human digestive tract is: What is the longest organ in the small intestine? What is the largest endocrine gland in the small intestine? What is the percentage of muscle tissue in thyroid people? 1/ The hardest substance in the human body is enamel. The organ that catabolizes alcohol is the liver. The internal organs of human detoxification are: the liver. What is the biggest detoxification organ? What is the thickest blood vessel in the human body? What is the organ that can tolerate hypoxia best? What is the largest cell in the brain? What is the smallest organ in the human body? What is the biggest muscle in the human body? What is gluteus maximus? What is the smallest muscle in the human body? Stapes muscle The largest digestive gland in the human body is: the liver and the five internal organs. Which of the following groups belongs to the five internal organs: gallbladder, small intestine, stomach, large intestine and bladder. The first aging organ of the human body is: How many muscles does the thymus have? How long are more than 600 human small intestines? How many kinds of blood vessels are there in the human body? How many pairs of cranial nerves do three human bodies have? How many bones does the human body have? There are three types of human muscles. Gastrointestinal peristalsis, breathing, circulation and other activities depend on: the main components of gastric acid in smooth muscle human body are: which element is missing in hydrochloric acid, which will cause goiter; Iodine What is the most important organ in human body? The organ with the highest percentage of water content in the liver is the eyeball. The human body can conduct electricity because it contains: the safe voltage of the water body is 36V, and how many pairs of sex chromosomes are there in the human body: 1. The development of the human body begins with a cell, which is the fertilized egg human body.

5. What are the health tips?

Life and health tips spring health tips 1. Health tips: Go to bed early and get up early every day to ensure a certain amount of sleep.

Second, strengthen exercise. After getting up every day, stick to the fresh air for early exercise. Perseverance can make you energetic and refreshed.

Third, breakfast health tips should eat more calories to develop the habit of eating the most calorie food every morning, in order to supply enough calories to the human body. Fourth, a balanced diet with health tips.

Eat more foods rich in high-quality protein to meet the growing demand of protein for vigorous metabolism in spring. Five, health tips to eat something slightly spicy, such as onions, ginger, leeks, garlic and so on. ; Diet should be light, greasy dishes will make people tired after meals.

Sixth, eat more yellow-green vegetables such as carrots, spinach, pumpkins, tomatoes, green peppers and celery. , rich in vitamin A, has the function of protecting and enhancing upper respiratory mucosa and epithelial cells of respiratory organs. Seventh, chronic bronchitis and bronchitis have health tips, and they are easy to attack in spring. Health tips: Eat more foods that eliminate phlegm, strengthen the spleen, tonify the kidney and moisten the lungs. Such as loquat, pear, walnut, honey and so on. Helps to relieve symptoms.

Eight, health tips Eating fresh fruits and vegetables can not only neutralize acidic products in the body, but also supplement vitamins. For example, raisins, oranges, bananas and apples are all rich in this mineral.

Top ten junk food and health tips in the world: 1. Fried food with health tips; 2. Pickled food; 3. Processed meat food with health tips (dried meat, floss, sausage, etc.). ); 4 biscuits (excluding low-temperature baking and graham crackers); 5. Soft drinks and cola foods with health tips; 6. Convenience food (mainly instant noodles and puffed food); 7. Canned food with health tips (including fish and sausages)

6. What is the knowledge about human anatomy?

The human body is really wonderful. You can only feel yourself, but sometimes you can't see yourself clearly

Scientists help us understand ourselves in various ways, but it still seems not enough for the complex "machine" of the human body. Let's look at the interesting facts that anatomy tells us.

1. Almost the same kind, about 65,438+00,000,000 people are Amanome like you. 1 1% people in the world are left-handed.

Every year, about 2000 left-handers die because of improper use of equipment specially designed for right-handers. 73% men are still strong at the age of 70.

1 in every 2000 babies are born with teeth. The average duration of human * * * is 2 minutes.

Second, about life and death At this moment, the living people on the earth account for 65,438+00% of all human beings who have been born. In 2007, one in every 1 13 people in the world will die.

After a person is beheaded, his head can stay awake 15 to 20 seconds. You won't fall into quicksand.

Turn the whole body in a small circle, and water will flow back between sand and clay particles, thus reducing the density of quicksand and making it easier for others to pull you out. People who don't sleep at all die earlier than those who don't eat at all

/kloc-people who don't sleep for about 0/0 days will die, and life can last for several weeks without eating. If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first, not from lack of oxygen first.

About metabolism, the human body produces 70 kilograms of adenosine triphosphate (a molecule that stores energy and makes almost all functions of our body work normally) every day. People produce 1.7 liters of saliva every day.

According to the Discovery Channel, one quart (0.946 liter) of saliva produced by an ordinary person in his lifetime is 25,000 quarts, which is enough to fill two swimming pools. People will drink an average of 65,438+06,000 gallons (60.57 cubic meters) of water in their lifetime.

Fingernails or toenails take about 6 months from the root to the fingertips. People lose an average of 40 to 100 strands of hair every day.

Ordinary people go to the toilet six times a day. By the time you are 70 years old, your heart has been beating 2.5 billion times (assuming an average of 70 times per minute).

Everyone lives as a single cell for about half an hour. Human epidermal cells shed and grow again every 27 days-about 1000 times in a lifetime.

After a person gives up drinking for 6 to 12 hours, the trace alcohol in his urine can still be detected by laboratory tests. Fingernails grow faster than toenails.

About 600,000 skin particles fall off every hour-about 1.5 pounds (680 grams) a year. By the age of 70, the average person will lose 105 pounds (47.63 kilograms) of skin.

Ordinary people release about a pint of intestinal gas every day. Most of it comes from inhaled air.

Others come from the fermentation process of undigested food. Fourthly, regarding the growing fetus, fingerprints were formed only when it was three months old.

Babies have 300 bones when they are born, and only 206 when they are adults. The average pregnancy time of human beings is about 270 days (from pregnancy to delivery).

Permanent teeth that grow to replace deciduous teeth are called hereditary teeth. About organs and tissues, a scientist weighed the weight before and after life, and he concluded that the human soul weighs 265,438+0 grams.

A small piece of meat protruding near your temple and in front of your ear canal is called tragus. The olfactory membrane of human nasal cavity is about the size of a stamp.

A dog's olfactory membrane is as big as a handkerchief. The olfactory lobe of a dog is about four times as big as that of a human.

The pale half-moon area at the bottom of the nail is called half-moon. 25% of human bones are in the feet.

The left lung is smaller than the right lung to make room for the heart. Fingers and soles of feet are covered with a thick layer of skin called stratum corneum.

The total length of nerves in human skin is 45 miles (72.42 kilometers). There are 60,000 miles (96,560.64 kilometers) of blood vessels in human body.

People have four main blood types: A, B, AB and O, and each blood type is either Rh positive or Rh negative. American blood group statistics: O-positive ~38.4%, O-negative ~7.7%, A-positive ~32.3%, A-negative ~6.5%, B-positive ~9.4%, B-negative ~ 1.7%, Yang ~3.2%, Yin ~0.7%.

6. With regard to explosive air released by latent cough, the maximum speed can reach 60 miles (96.56 kilometers) per hour. The speed of sneezing can exceed 100 miles per hour (160.93 kilometers). A healthy person can release 3.5 ounces (103.5 ml) of gas at a time and 0.7 ounces (502.75 ml) of gas a day when he is flatulent.

Every time you lick a stamp, you will absorb the heat of110. Mandibular muscles can provide about 200 pounds (90.72 kilograms) of force for molars to close and chew.

There is enough fat in the human body to produce seven bars of soap. People who are lost and hungry in the forest may get nutrition by chewing their shoes.

In a short time, leather has enough nutritional value to sustain life. The total value of all chemicals in the human body is about 6.25 euros.

/kloc-at the end of 0/9, in Egypt, millions of mummies were used as train fuel. The local wood and coal were scarce, but mummies existed in large numbers. The average human body contains enough iron to produce 3 inches (7.62 cm) of nails; It contains enough sulfur to kill all fleas on an ordinary dog; It contains enough carbon to produce 900 pencils; It contains enough potassium to fire a toy gun; Contains enough fat to produce seven bars of soap; It contains enough phosphorus to make 2200 matches; It contains enough water to fill a 10 gallon (37.85 liters) jar.

Snoring (up to 69 decibels) may be as loud as the noise of a pneumatic drill. About getting sick According to the research of German scholars, the probability of heart attack is the highest on Monday in a week.

Blood-sucking hookworms live in 700 million people all over the world. There are an average of 32 million bacteria per square inch (2.54 square centimeters) in the human body.

10% of human dry matter comes from bacteria. The only period of human population decline was a few years after 1347, that is, during the spread of the Black Death in Europe.

Eight, functional fingerprints have a role-can provide friction for fingers to grasp things. Smiling requires 17 muscles, while frowning requires 43 muscles. After working in front of the computer monitor for several hours, I looked at a blank sheet of paper.

White paper looks like pink. Laughter can lower the level of stress hormones and strengthen the immune system.

People aged 60 laugh an average of 300 times a day. Adults only laugh 15 to 100 times a day on average.

7. 200 pieces of health advice for students

Students are in the best stage of physical development and learning cultural knowledge. Most parents want their children to be healthy, study well and achieve something in society in the future, which requires a strong body and a smart mind. Good living habits are good for the brain.

First, have a good breakfast.

There has always been a saying that "breakfast is good, lunch is full and dinner is few", but because the morning is the most stressful time, some children are lazy and have no time to eat breakfast. This is very harmful to the brain, because skipping breakfast leads to low blood sugar and insufficient nutrition supply to the brain. Morning is the time when homework is the most, and the energy needed by the brain is not supplied, which will affect homework and brain development in the long run. Fresh milk is best for breakfast. It not only contains high-quality protein, but also contains lecithin necessary for brain development.

Second, ensure adequate sleep.

Sleep is a period of rest and adjustment for the brain. Sleep can not only make the cells in the cerebral cortex not fail, but also replenish the consumed energy and achieve a new balance in the process of excitement and inhibition in the cerebral cortex.

Good sleep can improve memory. Teenagers should ensure 8 hours of sleep every day. At the same time, you should be careful not to cover your head when you sleep, because when you sleep with your head covered, with the continuous increase of carbon dioxide concentration in the quilt, the oxygen concentration will continue to decrease, and the brain will not get sufficient oxygen supply, which will cause great harm to the brain for a long time.

Third, drink more water.

Water is the most important part of the human body. Studies have found that insufficient drinking water is an important reason for the accelerated aging of the brain. Teenagers should drink at least 8 glasses of water every day to ensure their physical needs. Take part in physical exercise. Exercise can not only make bones and muscles strong, but also promote the development of brain and internal organs.

Fourth, eye hygiene.

If the eyesight is impaired, it will bring difficulties to learning, affect students' reading effect and memory, affect the improvement of observation and limit intellectual development; If you are far away, it will cause difficulties in your future work, and you will not be able to engage in certain professional work, which will limit the play of your talents. Therefore, pay attention to eye hygiene, don't read books for a long time, don't read books in places with insufficient light, the distance between eyes and books should be 30 cm when reading and writing, and do eye exercises seriously.

5. It is not advisable to engage in strenuous activities immediately after meals.

Just finished eating, my stomach is full of food. After strenuous exercise, it affects normal gastrointestinal function and digestion, and can cause abdominal pain, nausea and vomiting. After a long time, it will also cause indigestion and stomach trouble.