What tears can change What tears are made of

Tears is an iconic word, and its rhyme can be moving, excited, sad, or frustrated. It is something that is governed by feelings. As for the implementation of the driving factor, it is quite complicated and has no substance.

It can change an environmental atmosphere, can twist an emotion, can make an inner emotion to reach a share with it, harmonious feelings with each other, of course, it can also cause the cold eyes of others, and be beaten into the ranks of indisputable, in short, tears can be a noun, can also be used as an adjective, it can be empty, but also quite conscious charm.

Waste of time! Do you have to have tears if you have feelings? Seeing those disgusting stars, they cry at every turn, and their acting skills are so good!

Change your impression in the minds of others.

Tears come from the lacrimal glands. The lacrimal gland is made up of thin tubular glands and ducts, and it is the organ that secretes tears. The lacrimal gland is located in the lacrimal gland fossa above the outer orbit and is divided into two parts: upper and lower

The upper part is the orbital part, also called the upper lacrimal gland, which is larger, and the shape is very similar to an almond, about 12 20 mm, and the lower part is the eyelid, also called the inferior lacrimal gland, which is smaller. The lacrimal gland has 10 12 excretory ducts, and the tear is excreted from these excretory ducts after it is produced. Tears are a weakly alkaline transparent liquid, in which water is the rest, and the rest are small amounts of inorganic salts and proteosomes, as well as other substances such as lysozyme, immunoglobulin A, complement system, etc.

After tears are produced, they are excreted through the tear ducts. The lacrimal duct consists of puncta, lacrimal tubules, lacrimal sacs, and nasolacrimal ducts. Tears enter the lacrimal tubule like a sewer and enter the lacrimal sac through a lacrimal tubule about 10mm long, which is specially used to collect and store tears and prevent tears from flowing out.

The size of the lacrimal sac is about 12 6 mm, and there is a tube 12 24 mm long and 3 6 mm in diameter under the lacrimal sac that leads directly to the nasal cavity, which is the nasolacrimal duct, and the tears in the lacrimal sac enter the nasal cavity through the nasolacrimal duct. Therefore, when we put eye drops, we should press down on the lacrimal sac with our fingers to prevent the eye drops from flowing into the nasal cavity through the nasolacrimal ducts.

When people are sad, grieved, and broken, they shed tears; People shed tears when they are happy. Tears seem to be a symbol of emotional change, but in fact, tears do not exactly indicate a change in mood. When a foreign object such as dust falls into our eyes, a large number of tears are generated and the foreign body is washed out.

In addition to a large amount of water, there are lysozyme, immunoglobulins, complement system, lactoferrin, -lysin, etc., which have the effect of inhibiting the growth of bacteria. Therefore, tears have another very important function - defense. In general, the conjunctival sac is not an ideal place for bacteria to survive, because the most suitable growth temperature for bacteria is 35 38, because when the eyes are opened, the tears evaporate, and the temperature of the corneal surface can be as low as 30, so it is not suitable for the growth of bacteria, but the temperature of the conjunctival sac will rise when the eyes are closed or bandaged for a long time, which is conducive to the reproduction of bacteria.

The defensive effect of the conjunctival sac comes from the bacteriostatic substances in the tears. The main function of lysozyme in tears is to achieve the purpose of sterilization by decomposing polysaccharides present in the bacterial cell wall. A total of five kinds of immunoglobulins have been found in tears, the most of which is immunoglobulin A, which can inhibit the attachment of germs on the surface of the mucous membrane, and dissolve bacteria with the participation of lysozyme, so as to achieve the purpose of sterilization.

Lactoferrin inhibits the metabolism of bacteria by preventing the utilization of iron ions by bacteria, so as to achieve the purpose of sterilization. -Lysin is a non-lysozyme antibacterial substance, which mainly fights staphylococcus, lyses the cytoplasmic membrane of bacteria, and assists lysozyme. In addition, tears can also moisten the surface of the eyeball, moisten the conjunctival sac, and change the optical properties of the cornea.

You see, tears also have such an important role, so it's not just about a change in mood.

Among them is water, and the rest is a small amount of inorganic salts and proteosomes, as well as other substances such as lysozyme, immunoglobulin A, complement system, etc.

Tears may be able to change your mood.

Crying is a way to vent, and when you are helpless and disappointed, tears are your best way to vent.

It can help you put your pain behind and make you brave enough to face the future.

Tears are not a great thing, but they can make your mind relax and look at things rationally.

After the tears, there is a clear sky, prove yourself with actions, and you will become strong. Tears only make people sadder and don't change anything. What will only be left for you is unknowingly remorseful, don't be obsessed with it anymore!

Being wrong once does not mean that you will always be wrong, and you will learn to cherish it only if you have tried the pain.

To ease your mood, it is recommended that you learn to forget about the baby's crying! Or you see how happy the baby is!

The lactoferrin and lysin in tears have defensive functions and can inhibit the growth of bacteria.

In addition, the secretion of tears promotes the normal metabolism of cells and prevents them from forming tumors.

When your spirit suffers a sudden blow, when you are depressed, you might as well cry happily. Don't hold back your tears, that will aggravate your depression and make you sick.

Strong negative emotions cause you to have a high degree of psychological tension, and when this tension is suppressed by you and cannot be released, it is bound to become a kind of energy that accumulates and is ready to go, causing disorders in the function of the body's autonomic nervous system.

Over time, it will cause damage to physical and mental health, contributing to the occurrence and deterioration of certain diseases.

When crying, these harmful chemicals are excreted with the tears, which effectively reduces the concentration of harmful substances and relieves tension. Studies have shown that when people cry, their emotional intensity is generally reduced by 40%.

This explains why you feel so much better after crying than you did before crying.

As a common emotional response, crying plays an effective protective role in people's psychology.

Crying can provide a way to release energy, relieve psychological tension, and relieve emotional stress, thus effectively avoiding or reducing the occurrence and development of diseases.