What is the use of human nails that have evolved to the present day?

Usefulness of nail evolution:

1. It has a "shield" effect, which can protect the distal fingertips from damage and maintain their stability;

2. Enhance the sensitivity of finger touch, assist in grasping, coercing, pinching and squeezing;

3. It enriches the blood supply of the nail bed and regulates the peripheral blood supply and body temperature.

Nails are flattened nail-like structures on the back of human fingers, which are the products of keratinization of the epidermis of the finger tips and play a protective role in protecting the finger tips.

Extended Information: The following are the characteristics of healthy nails that can work:

Healthy nails are rectangular or square, and the length of the nail is about one-half the length of the first knuckle. The nails are translucent, pink, and have no other colors or spots or bands. Press firmly on the nail to turn white, then release it and return to a light red. Healthy.

The nails are uniform in color, all of them are consistent, and there are very fine parallel longitudinal lines on them.

Nails have a certain elasticity and are of appropriate thickness, with children having thinner and softer nails than adults and older people having thicker nails. The color and shape of the nails can reflect the function of the liver, "the claws are more than tendons", the claws depend on the nourishment of the liver blood, the liver blood is sufficient, the nails are rich in nutrients, and the nails will be tough and ruddy. The main components of nails are keratin, calcium, and if the calcium content is insufficient, it can also affect the appearance of the nails.

Nails mainly play a protective role on the fingers and toes, and its texture is relatively hard, which can effectively protect the fingertips and fingertips in life. Changes in nails can effectively reflect a person's physical condition, so it is important to pay attention.

The function of the nail is mainly to protect the fingers (toes) of the hands and feet. From the evolutionary principle of "use in and waste out", if it is not useful, the nail will have degenerated long ago. The function of the nail is mainly to protect the fingers (toes) of the hands and feet.

It can also be used for activities such as excavation, of course, modern people use tools instead.

That's because humans have evolved to adapt to the environment in which they live, and the purpose of having nails was originally evolved to facilitate climbing, fighting (competition for survival), and assisting the mouth to eat, etc.

Later, with the continuous evolution of human beings, our nails are not as hard and long as before, and now our nails are mainly to protect the fingers. P.S. Over time, our nails will continue to deteriorate, because when we no longer need to use it, it will lose its original function and will slowly degenerate.

Just as animals and hominids have a lot of body hair and we don't have a lot of body hair because we don't need it anymore.

If you don't have toenails, you will feel unsteady on your feet. Together with the toes, forefoot and back of the foot, it supports and stabilizes the upper body. Without toenails, it would be very difficult to walk, run, and climb mountains because there was no stability and grip.

If you don't have toenails, your toes don't have muscles and they don't function as they should. And when you are working, your nails are a protective film, which can prevent your fingertips from being easily injured.

What is the use of human nails that have evolved to the present day? First of all, it has a "shield" protection effect, which can protect the distal fingertips from damage, maintain their stability, enhance the sensitivity of the fingers, and assist in grasping, coercing, pinching, squeezing, etc. The nail bed is rich in blood supply, and has the effect of regulating peripheral blood supply and body temperature.

So the effect is quite large.

Evolution so far, the main role of human nails is to protect, protect the end blood vessels and others, assist the hand to complete grasping, grasping, holding, playing and other work, the color of normal adult nails is pink, there is heat, nails can protect people's fingers directly touch objects, can scratch, peel shells, pick ears, but also decorate and protect fingers, is the hand looks more slender and beautiful.

Human nails are the ones that protect our fingers. Now the biggest effect is to look good and beautiful.

What is the use of human nails that have evolved to the present day? I think he always was. Protects our soft tissues.

This makes our fingers healthier and more beautiful. The main component of nails is keratin, which is similar to hair, and nails belong to the appendages of **, which have sensory effects, enhance the sensitivity to touch objects and strengthen the sense of touch, and help daily life grasp and pinch. At the same time, the nail has regeneration, which can resist some external damage and protect the distal joints of the fingers; The nail has abundant blood supply and has the effect of regulating the peripheral blood supply and body temperature.

At the same time, nails are also an early warning machine for diseases, such as lack of trace elements in the body, fungal infection, etc., and nails can change color and shape.

People with short nails have weak hearts and are susceptible to diseases from the abdomen to the lower back, as well as the lower body. If the tip of the nail is flat and embedded in the flesh, it may be susceptible to neuralgia, rheumatism and other diseases. People with narrow lower nails, ridges and other bones are susceptible to diseases, especially those with very soft nails, and calcium is always very deficient.

People with shell nails should pay more attention to minor problems in the spinal cord and nervous system. Too many white spots on the nails are a symptom of neurasthenia, and there are yellow dots that indicate a digestive disease. Small particles on the nails are a sign of drug poisoning or parasites in the body.

If the half-moon shape at the lower end of the nail is large, it indicates rapid blood circulation. If it is small, the blood circulation is not good, and when it comes to extreme anemia, the half-moon shape will disappear completely. Straight lines on the nails are evidence of overwork and overuse of the brain.

At the beginning of a dangerous pathology, the horizontal line is only exposed at the lowest end of the nail and gradually moves upwards as the nail grows, and those who are skilled in this way can infer the possible period of the disease from the position of the horizontal line. 1. The nail color of healthy people is pink. If you put ten nails in the sun and move your fingers up and down, if there is a shiny reflection on the surface of the nails, it shows that the overall health is in excellent condition, and the organs in the body are functioning properly.

2. Brown longitudinal lines or longitudinal cracks appear on the surface of the nail, extending from the fingertips to the root of the nail, which indicates intestinal inflammatory lesions or indicates vitamin deficiency and iron deficiency. Partial whitish nails indicate zinc deficiency. Plain whitish is indicative of anemia.

Brownish-yellow streaks on the nails are a sign of liver disease. However, it is worth noting that this brownish-yellow stripe must appear on ten fingernails at the same time, which is liver disease; Presence alone is not diagnostic evidence. 3. If there are many thimble-like pits on the nails, it is most likely a late symptom of psoriasis.

4. Swelling on the fingers and purple halo on the nails is likely to be a lung disease. Nails become thinner, brittle, or even cracked, indicating diseases of the respiratory and circulatory systems. 5. The middle of the nail is inverted, like a spoon-shaped, indicating that you have diabetes, anemia, hyperthyroidism or malnutrition.

6. There are dark reddish-purple blood spots under the nails, which often indicate purpura and blood diseases.

Human nails are actually created to protect the flesh of the nails. Of course, nails also have a certain role, such as usually grabbing something, or squeezing something, at this time the role of nails is still very large.

What is the use of human nails that have evolved to the present day? In fact, nails can be used to protect our fingers. Because nails are hard shells that help our fingers do a lot of things. The ten-fingered lotus heart, if the finger is broken, it will be very painful, and it mainly plays a protective role.

In fact, human nails are still very useful in evolution, for example, they are used to protect themselves, and when they fight with others, they can also be used to protect themselves. In addition, nails can also hint at our physical condition, for example, nails with good health are pink.

Human nails are of little use now, but nails are formed by the excretion of various impurities and heavy metals from the body, which can be regarded as a way of detoxification of the human body.

The ancestors of mammals are reptiles. When crawling on all fours, the nail acts as a protective act, and it can be worn and regrown. In addition, it also has a certain role in the process of predation and grasping.

The vast majority of mammals retain the fingernail feature, which shows that it plays an important role in mammals, but there are some differences in morphology, such as the claws of carnivores and the hooves of herbivores. Although the human nail does not have many practical functions, it has been retained in evolution. There is still a certain function in life.

Nails grow from the base, which is an accumulation of dead cells, which belong to keratinized cells, which we call keratin. The main ingredient is keratin, which is colorless and translucent. The main components of hair and animal feather horns are keratin, but they contain pigments.

I'll come: Human nails have evolved so far that they have many uses, they can be used to tickle, pick out their ears, protect the flesh of their fingertips when climbing cliffs, pick their nostrils when necessary, and use their nails more when playing the piano, and they can complete grasping, grasping, and holding. Playing the piano works in various movements.

Done, thank you for your question, hope, thank you!

Fingernails can not only be used to scratch itches, pick noses, and pick ears, but also protect the flesh of fingertips when climbing;

In addition, the nails also have the effect of modifying the fingers and making the fingers look more slender and feminine, and it is said that the nails also have medicinal properties, which is really powerful.

I think the most useful thing for the nails of human beings that have evolved to the present day is to peel nuts or to assist them, the most important role of fingers to hold objects is to assist, fingers, to do some work and things, you can also, pick some hard substances, break some substances, if there are no nails, the fingers will be too soft, or, oil nails, in order to be more convenient to work.

The right angle of man evolved into the current right angle. There are many uses. Use.

First of all. People can give to each other. Tickle.

You can scratch yourself. Everything. You can also tickle each other.

Yes. with right angles. Pick your ears and pick your nostrils.

With nails can be Nie Zhen. Good good good body, long thorns. Nails are ok, protective.

Finger meat doesn't have to hurt. Fingernail. And such a beauty.

If you don't want to evolve, follow the guidance of Hanghang. If that person is going to look like that, the right angle is particularly unsightly.

I think some people use it to pick their ears, some people use it to itch, and the above is the use of boys, girls may go for manicures, and some people have their nails to hit the Guinness Book of World Records.

Nails are very useful, and they are the best gift God can give us, and without them we can't do many things. Nails may seem small, but they are very useful. Just like animal nails, it can help them climb trees, and it is very helpful to go up the wall, and human nails are also very helpful to people, and they are an instinctive manifestation of human survival.

Nails are very useful, and they are the best gift God can give us, and without them we can't do many things. Nails may seem small, but they are very useful. Just like animal nails, it can help them climb trees, and it is very helpful to go up the wall, and human nails are also very helpful to people, and they are an instinctive manifestation of human survival.

If you don't have toenails on your feet, then you will have no strength to walk, and you will be deformed when walking, so the same is true for your hands, if you don't have fingernails, your hand strength will be much smaller, and it will definitely be inconvenient to use.

Fingernails can protect people's fingers from touching objects directly, and there is a slight distance between the nails and the fingers, which plays a role in protecting the fingers.

What is the use of human nails that have evolved to the present day? The main role is to protect, protect the end blood vessels and assist the hand to complete various tasks such as grasping, gripping, holding, and playing, the color of normal adult nails is pink, there is heat, and the nails can protect people's fingers from directly touching objects, and can also decorate and protect the fingers, so that the hand looks more slender and beautiful.

In order to adapt to the living environment, people originally evolved to have nails to facilitate climbing, fighting, and assisting the mouth to eat. Later, with the continuous evolution of human beings, our nails are no longer as hard and long as before, and now our nails are mainly to protect our fingers. Nails will continue to deteriorate, because when we no longer need to use them, they lose their original function and will slowly degenerate.

The nail is a flattened nail-like structure on the back of the finger (toe) of humans and apes, which belongs to connective tissue. It is a deformation of the claw, also known as the flat claw, and its main component is keratin. Homologous to the claw, the claw plantar retracts, and the claw plate forms a rectangular sheet, which is the product of epidermal keratinization at the end of the finger (toe) and plays a role in protecting the end of the finger (toe).

Species of the suborder Primate apes and primates have nails. Some species of the suborder Protomonkey do not have nails, and some species only have fingernails at the ends of some fingers, such as bee monkeys (slow loris) with claws on the second toe and nails on the rest, while finger monkeys only have nails on the first finger (toe) and the rest of the fingers (toes) are claws. The main component of rhino horn and nails is keratin.

Nail Bodybuilding Protection 1. Keep your nails dry and clean, which can prevent bacteria or other microorganisms from accumulating in your nails and causing infection. 2. Some nail products contain volatile solvents, such as alcohol and formaldehyde, which deprive healthy nails of important nutrients, so it is best to choose nail polish and nail polish remover, and it is best to choose acetone-free gloss water, because acetone will not only make your nails fragile, but also leave a layer of white mist on your nails. 3. If the toenails are very thick and difficult to trim, soak your feet in warm water (you can add a little salt to the water) for 5 to 10 minutes, and then trim the nails after they become soft.

4. Vaseline has a high degree of moisturizing, it is a good hand and nail protection product, before going to bed at night, apply an appropriate amount to your fingers and nails, massage gently, and in the long run, your nails will have a beautiful luster like pink pearls. 5. Don't do nail art too often. The surface of the nail has a substance like the enamel on the surface of the tooth that protects it from corrosion.

When the nail surface is filed off during the manicure, the finger loses its protective layer and loses its resistance to the corrosion of acidic or alkaline substances. Therefore, frequent manicures can cause broken nails and yellowing or blackening in color. 1 Healthy people's nails are a beautiful pink color.

2. Pale nails are bloodless, indicating anemia, blood cold, loss of qi and blood, and low blood pressure. 3. Bruised nails indicate insufficient blood supply and hypoxia, arteriosclerosis, and high blood lipids (high cholesterol). 4 In people who are close to death, their nails tend to gradually turn black from the tips of the fingertips at the base and grow upwards into a straight line, and they die at the end of the day.

5 Blue nails lack oxygen. Blue too much, blue, bruising, or cardiac obstruction, is a malignant lesion of the nails. 6 The blue nails are severe cold and bloody.

Qinghei is in critical condition. 7 Yellow nails are jaundice, hepatobiliary diseases, and tobacco addiction. It also suggests a chronic lesion that appears on the thumb and indicates poor general health.

8 Nail bed leukoplakia indicates a lack of calcium, silicon, or parasites in the body. Day shifts also occur with drug or nicotine poisoning. People with day-shift nails, fatigue easily, or have chronic habitual constipation.

The appearance of white spots on the middle finger indicates a lack of calcium in the spine, osteoporosis, and is prone to lumbar spine and leg diseases or fractures, which are not easy to repair.