Top 24 most interesting things about the human body that not everyone knows

The human liver has many interesting “bests”. The liver is the organ that takes on the most roles in the body such as: synthesizing, filtering, hematopoiesis, detoxification, metabolism of substances, excretion, storage, digestion, etc. many important biochemical reactions. The liver is the heaviest organ in the human body. In an adult, the liver weighs about 1-2 kg. Liver cells are the only cells in the body that have the ability to regenerate themselves. If you cut off half of your liver, the other half will regenerate itself and the other half will be cut. And if you cut half of the kidney, the same will not happen.

An interesting secret about skin is that they are not water absorbent. This is the reason why when you swim or relax, immerse your body in the water environment without worrying about the water being able to seep into our body.

Scientists have proven that our brain consists of two parts – the left hemisphere and the right hemisphere – which take on different tasks in the process of physical development, strength and intelligence. People. The left hemisphere of the brain controls the right half of the body and the right hemisphere controls the left half of the body. People with a developed left brain will be strong in language, reasoning or communication skills. Meanwhile, people with a developed right-brain will be prone to daydreaming, flying and tend to do well in careers related to art and emotions.

Breast milk is truly the best milk for babies. It is the most suitable milk for the baby’s digestive system, it contains the highest vitamin A content and the largest concentration of IgG antibodies than any other milk on the market. Therefore, exclusive breastfeeding for the first 6 months is the best and safest way to feed a baby for the comprehensive development of the child.

The human stomach always secretes an acid to digest food called hydrochloric acid. The concentration of this acid is so strong that it can wear down even a strand of zinc. However, our stomach is still not corroded by acid because of the protective mechanism of the stomach lining, through a system of cells that secrete mucus and bicarbonate to neutralize the acid. However, in cases of disease, the stomach can still be eroded by this acid, causing ulcers or worse, the stomach can be perforated.

Many people think that their breasts are balanced and harmonious, but that is not the case. Whether you are a man or a woman, the left breast size is more prominent than the right one. The reason is because we are mostly right-handed and use it more, so this part of the hand will be stronger. Because the right hand is stronger, it will support a lot of force for the chest muscles, which makes the chest part less affected by force, so it is less developed. Along with that, the left hand is weaker, less exercised, so it has a large share to the chest, causing the left chest to develop more.

Our lungs fit neatly in the ribcage, it can rise and fall rhythmically with each inhalation and exhalation. In fact, the total surface area of ​​the two lungs is enormous. If stretched, it could be the size of an international tennis court, which is about 195 to 200 square meters.

Body odor comes from a modified form of sweat, which is a form of sebum produced by sweat glands that is concentrated mostly in the underarms, genitals, and anus areas. The essence of sweat is not what it sounds like until it is attacked by parasitic bacteria on the skin and assimilated fatty compounds and creates an unpleasant odor.

Every day, people still do not stop kissing through the mouth, but few people know that, according to many studies, each of our kisses exchanges about 270 million bacteria of all kinds.

If the right hand finger is on top when clasped hands, it means that the right hemisphere of the brain is dominant. On the contrary, if the left finger is on top, it shows that the left hemisphere of the brain is more active. The right hemisphere is responsible for emotions and imagination, while the left hemisphere is used for thinking, analysis, and logical thinking. 1% of the population put their fingers parallel to each other. People with this habit are ambidextrous. Scientists agree that for ambidextrous people, no one hemisphere of the brain is dominant. Their brains will develop equally.

The thyroid gland is located in the neck and is the largest endocrine gland in the human body. It weighs about 30-35 grams. The thyroid gland has many important functions in the development and maturation of organs in the human body.

Most people think that every organ in our body works only under the control of the brain and spinal cord. However, our hearts are very special. Thanks to the automatic activity, the heart still beats when the nerve supply is cut off, regardless of the signal from the cerebrospinal cord.

This is perhaps the only organ whose function remains a bit of a mystery. It contains about 100 billion neurons. The brain has no pain receptors, in other words, it receives pain signals, but it cannot feel pain. The brain has about 100 terabytes of memory, the equivalent of a supercomputer. Humans actually only use a fraction of the brain’s capacity. Even while we sleep, we use about 10% of our brains

All people – regardless of gender – have milk glands, milk ducts, and nipples. Therefore, male breasts can also produce milk if stimulated. Hormonal imbalance, severe stress, … are some of the causes that stimulate milk production in men.

In addition to creating beauty and individual style for each person, hair also has the effect of keeping the scalp warm. The lifespan of each hair is about 2 to 8 years. However, there is a special thing that hair cells are never cancerous, ie there will be no hair cancer. While almost all cells of the body are susceptible to cancer from few to many.

Deep in the skin are melanocytes (melanocytes) that produce melanin (melanin). Exposure to the sun causes them to produce more to protect your skin from UV rays. That’s also the reason your skin becomes dark, tanned when exposed to too long in the sun during the day.

At first glance, it seems normal, but actually when suffering a lot of damage, the skin will also have its own mechanisms to cry for help, which if you do not understand, you will accidentally ignore. According to a study published in the Journal of the American Medical Association: “Tanning is a sign that the skin has already been damaged. And that skin can continue to be damaged further if exposed to the rays. UV.” Irritation, redness when using cosmetics, sunburn … are the first signs that the skin is “calling for help” before sudden changes that cause damage to the skin. There are solutions to overcome to avoid unwanted adverse conditions.The skin looks normal, but in fact has suffered serious damage.

Normally, when we don’t cry, our eyes still secrete a certain amount of tears to clear and moisten the eyes. Tears contain components such as electrolytes, nutrients, and antibodies that are well suited to the eye’s environment. Tears are considered the best eye drops that all the artificial eye drops advertised on the market cannot match.

Research by Vinhius University (former Soviet Union) had each person try to look at three different objects with the right eye, then the left eye, and finally with both eyes, looking at each other independently (using a divider between the two eyes). eye). As a result, in everyone, the right eye identified objects better than the left eye.

From there, it is concluded that: The right hemisphere of the brain receives visual information more quickly than the left hemisphere. It is a fact that when practicing shooting, we easily see that the eyes are uneven and have very different vision. Squinting the right eye feels awkward, difficult, and not as tight as the left eye. But with the right eye open and aiming, it is easier to catch the target and hit it than squinting with the right eye, aiming with the left eye. Obviously the right eye is much sharper.

That’s right, once you need to go to the bathroom, the ability to lie is pushed to the peak. The strong desire to “resolve the sadness” causes us to focus on self-control, which in turn makes the lie more convincing. In addition, they also restrict any other movement while urinating.

The main function of the kidneys is to remove waste products from the blood. To do their job, each kidney has at least a million, possibly up to two million, tiny filters, called nephrons (renal units). Humans do not really need 2 kidneys, just one is equally good at filtering blood. Besides, if a child has only one kidney at birth, he will grow to be the weight of 2 kidneys combined.

In the human body, water makes up about 50-60 % of body weight. In an adult, the body contains about 30 to 40 liters of water. No exaggeration, this amount of water is just enough to wash a bunch of clothes.

The skin produces 11,3 liters of sweat per day on hot days. The parts that don’t sweat are the skin under the fingernails and toenails, the edge of the lips, the skin that covers the penis.

Research by Dr. Luca Tommasi and Daniele Marzoli of the University of Chieti (Italy) observed the attitudes of hundreds of people about how they listen and how they react, showing that people prefer to listen in the right ear because they are easier to listen to. more information processing and easier to fulfill the proposed request. Scientists believe that the “right ear advantage,” which is that information received through the right ear is processed by the left hemisphere of the brain, which tends to decode verbal information more logically and better than the right hemisphere. So the secret to getting someone to do what you ask is to speak into their right ear.

If you ask any man, they will certainly agree that facial hair grows incredibly fast. They have to shave every day because they grow continuously. Perhaps this sometimes becomes the advantage of men when women are often attracted to beards.