Why are people crying? From pain, resentment, grief, from joy, happiness, delight. There are a lot of reasons to wash your soul with tears, both physiological and emotional. The ability to cry is one way to express your feelings. In the process natural selection only those who could cry survived.
Oddly enough, we are not born with this ability. Crying is not always accompanied by tears. Babies start crying only at 5-12 weeks after birth., a little before the time when laughter appears in their arsenal. The average duration of crying is 6 minutes. Babies cry more than adults, about 65 times a month.
Every day, small lacrimal glands secrete about 1 ml of lacrimal fluid. Each tear has a very complex structure . It consists of mucus covered with a layer of water, a layer of oily substance consisting of lipids and other fats (fatty acid amides). The tear contains table salt (sodium chloride), potassium chloride and substances involved in the formation of salts (calcium, sodium bicarbonate, manganese). There is another special substance in the composition of the tear - lysozyme, its presence explains the bactericidal properties.
By blinking, the upper eyelid, like windshield wipers, distributes the tear along the front surface of the eye from the upper eyelid to the lower eyelid. On its way, a teardrop wets the cornea, washing away everything superfluous and unnecessary. Then the tear moves to the lacrimal lake, located in inner corner eyes. From the lake, along the lacrimal ducts, the tear enters the lacrimal sac, and from it already into the lacrimal duct and into the nasal concha, where it is partially absorbed by the mucous membrane and partially evaporates.
AT individual cases the main lacrimal gland is included in the work, and tears appear in large quantities, which can be seen with the naked eye and can be "collected" with improvised means.
In addition to the protective function, a tear supplies the cornea with nutrients, gas exchange between the air and the cornea takes place in parallel, and vision improves, because teardrops fill the smallest defects in the surface of the cornea.
A thin film forms on the surface of the eye, which does not become cloudy and does not allow evaporation.
What do tears do? Relieve stress and relax emotions. In addition, tears remove toxic substances from our body, normalize blood pressure, increase immunity and even promote the healing of injuries - such a kind of therapeutic effect. There is another benefit: it is thanks to tears that the skin around the eyes is so tender and remains young for a long time. It turns out that crying is very useful.
Tears are different- reflex, tears of irritation (when inhaling something, for example, the smell of onions) and emotional (after watching movies, reading books). They differ in composition. Emotional tears contain more protein, so after such tears it becomes easier, psychological relaxation occurs.
Not only people can cry. Some animals also have reflex tears, which are necessary for cleansing and moisturizing the eyes, this applies to those who live on land. They, like humans, are subject to negative impact the surrounding world. Inhabitants body of water Tears are not provided by nature. BUT " crocodile tears”- these are not tears at all, but a secret secreted by the salivary glands of a crocodile.
Ponomareva Daria
Research work of a 3rd grade student.
"Why do we cry? or where do tears come from?"
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MUNICIPAL BUDGET EDUCATIONAL INSTITUTION
"Navlinskaya middle comprehensive school No. 2"
RESEARCH WORK
Related: Why do we cry? Or where do tears come from?
Subject area: the world around
Performed:
Student 3 "b" class
Ponomareva Daria Alekseevna
Supervisor:
Teacher primary school
Zharkova Tatyana Viktorovna
NAVLYA - 2015
Introduction
Theoretical study of the problem:
How do tears appear?
Are tears helpful?
And what are tears?
Why don't tears freeze?
Tears are so different...
Why do we cry from onions? My experiment.
conclusions
Conclusion
Literature
Introduction
One day, I thought about the question: “Where do we get tears?”. I really wanted to know why we cry?
The first tears appear in childhood. I am sure that in the life of every person they were in front of their eyes. Maybe they were tears of happiness, fear, pain, sadness, longing, or a mote got into the eye? Or maybe you did clean the bulb? But how, how do we get them? And why do we want to cry at such moments? Can they freeze on our cheeks when severe frost? Why is it embarrassing for someone to cry, while another easily sheds tears? And in general, is it harmful to cry or is it useful? As tears rolled down my cheeks, I found out they tasted salty. Strange, but there is no salt in our eyes. I think that rarely anyone thinks why a person needs tears? It was these and many other questions that interested me in choosing this research topic.
Purpose of the study: explore why we cry and explore where
Tears are taken, their composition.
Tasks: - learn how tears appear;
Find out how tears are useful;
Understand why they are salty;
Try to experiment with tears yourself.
Hypothesis:
- find out what tears are tears - this is an excess of water in our body and when there is a lot of it, we want to cry or tears our body needs and it produces them itself;
- let's say that they are salty, because there is salt in the human body;
- perhaps these unusual drops want to see another world, a world "outside the eye";
- But what if tears wash away everything superfluous and unnecessary from our eyes, or they are afraid to freeze.
Object of study: human tears
Subject of study:tear production process
Research methods: - analysis of literature and Internet sources;
Experiment;
Own observations and conclusions.
Theoretical study of the problem
How do tears appear?
Probably, in our eyes there is a special bag in which water is collected and flows out of our eyes in the form of tears through a special vessel. But how do they get into this bag? With the help of a teacher, I will try to understand these issues.
From Internet sources, I learned that the old Russian form of the name of the tear was taken from the Old Slavonic language and meant - "rinse, make clean."
Our ancestors, the ancient Slavs, had a curious custom: married women collected their tears in special vessels, and then mixed them with rose water and used to heal wounds. By the way, women in Byzantium and Persia did the same ...
From medical reference books, I found out that the treatment can also be in tears. Tears contain the enzyme lysozyme, which neutralizes bacteria and prevents them from causing dangerous infections.
Crying is a natural procedure and when we take a short breath and a long exhale, and this has a positive effect on the work of the respiratory and circulatory systems. What is an important process of our body!
Tears - one of the very important elements of our body.
Tears - a clear liquid produced by the lacrimal gland of the eye.
Above top corner eyes, just below the eyebrow, is lacrimal gland . Its size is no more almond. However, she is able to throw out streams of tears. Scientists studying the problem of crying have found small amounts of stress hormones in tear fluid.
Lacrimal glands constantly produce tears. Tears enter the eye through a small duct that opens at the outer corner of the eye. Each time you blink, your eyelids spread the tear in a thin layer over the surface of your eye. Then the tears flow through the tubule located at the inner edge of the eye, closer to the nose. These tubes end in the nasopharynx, where “used” tears flow out. Then they are simply swallowed.
Are tears helpful?
It turns out that tears contain psychotropic substances that relieve stress and it is for this reason that crying brings us relief. So our tears are not just water, but a very important functional element of our body.
On the Internet sites surveyed, many people agree that crying well is always good!!! And not only for the eyes, but also for the nasopharynx... Our tears wash and kill bacteria. When the body is sick, and there are a lot of bacteria in it, it rises heat and a defensive reaction of the body is triggered. There is tearing...
So, I found out that:
- tears are involved in the flow nutrients cornea of the eye;
- perform a protective function - they cleanse the eye of foreign objects;
- when tears are released, the surface of the eye is wetted (the appearance of “dry eyes” is one of the signs of their fatigue or a decrease in visual acuity);
Tears can be an accompaniment of emotions, for example, tears duringcrying or laughter .
When human crying , lacrimation usually occurs - this is an active discharge a large number tears.
And so that tears do not leave swelling and swelling, you need to cry correctly - in a cool room, sitting and not wiping yourself with a handkerchief.
In general, what does our tear consist of? From what substance?I read in one of the books that tears are mainly composed of:
- WATER;
- BELKOV;
- FAT;
- SALT;
- SODA;
Therefore, our tears do not linger on the surface of the skin, because they are covered with a thick oily film. This fatty film was specially studied by American scientists who discovered lipids in it (an extensive group of natural organic compounds, including fats and fat-like substances).
Therefore, the tears that flow down our cheeks taste salty. Did you know that our tears are not the saltiest tears in the world.
For example, the body of sea gulls that feed on ocean fish contains a large amount of salt. Tears help seagulls get rid of excess salt, that is, salt is excreted from the body with tears, which means that tears contain a lot of it.
If birds remove excess harmful salt with tears, then maybe a person, crying, also gets rid of something harmful?
When we experience strong emotions or pain, our brain releases substances that signal arousal or harmful stress, and our body releases special stress hormones. Crying scientists have indeed found some of these signaling agents and stress hormones in tear fluid. That is, tears help us get rid of excess substances that are formed as a result of strong emotions. As these substances are removed, we begin to calm down. Many say that after crying, they feel a feeling of freshness, like after a cool summer rain. Of course, you should not cry day and night, but crying a little sometimes is not harmful, but very beneficial for our health.
Statistics show that women cry twice as much as men.The male hormone testosterone prevents the accumulation of tear fluid, so it's all about the biochemistry of the male and female body, and not at all in education. However, the composition of men's tears is no different from women's. And there are reasons why both men and women cry the same way!
I may surprise someone, but there are people who can cry for no reason and with a reason, about 75% of women and 20% of men cry three times a month.
According to research results, the most whiny are Americans, Nepalese and Germans. But the Chinese will grit their teeth, but will not cry. Crying really relieves stress. However, scientists recommend crying for no more than 20 minutes. Otherwise, bags under the eyes, redness may form, and, finally, crying can turn into a tantrum, which will aggravate your condition. Maybe I’m grieving with tears and you won’t help, but you’ll definitely relieve nervous tension.
Frozen tears
became like ice.
Suddenly pearls
rolled break ...
Looking for an answer to this question, I encountered a lot of disputes between people.
- Some argue that tears are like sea water, which freezes at a temperature of - 2° C because it's salty. And in tears there is much more salt than in the sea. Therefore, they can freeze only at a temperature of about -40°C . Others claim that salt water freezes more slowly than fresh water.
- I myself think that in severe frost, tears can freeze on the eyelashes and on the cheeks.
- I was also interested in the statement that tears are not only salty, but also hot.
- Someone claims that our face is hot enough to keep the water in. liquid state, as well as tears rolling down warm cheeks.
Practical study of the problem:
An experiment on the production of lacrimal fluid.
So, I want to try to create a composition similar to our tears myself. I took the three main components of a tear - this is salt, baking soda and boiled water.
I put all three parts together.
I take table salt, add baking soda, I add water, I mix all the parts .... Pour the resulting water into a clean cup ....
Mmmm, interesting to taste, what did I get?
And I got - salty water, similar to sea water and tears!!!
I will take a pipette, imagining that it is our eye, and draw water into it, as the lacrimal gland collects our tears. and drip from it
Hooray! I got a small tear. You can’t even imagine how much it was interesting for me to create a teardrop myself!
TEARS ARE SO DIFFERENT
Very often, a person has tears on the street in windy weather, in the cold. I figured out this reason with the help of the Internet, it turns out everything is simple. The wind dries wet surface eyes, the lacrimal gland begins to work hard to restore the water-salt balance. But at the moment of a gust of wind, we impulsively close the eye, contracting the muscle, a spasm of the lacrimal duct occurs and the lacrimal fluid cannot descend, and exits through the large lacrimal duct in the inner corner of the eye. For exactly the same reason, tears flow in the cold due to a sharp drop in air temperature.
It turns out that when we have grief, great stress, our body begins to produce not only useful, but also harmful substances that irritate us and harm our psyche. In order for the body to remove them from the body, tears are used, with which harmful substances come out. After a person has cried, he immediately feels better, because the psyche no longer experiences a harmful effect. This is the absolute truth, confirmed by medical research.
Real tears also arise when we clean and cut onions.American chemist Eric Block managed to isolate the volatile substance contained in onions, which causes tears. This substance is called "lachrymator" (from the Latin lacrima - tear). When the bulb is cut, the lachrymator is released and dissolved in water and the person's tears. This produces sulfuric acid, which irritates the mucous membrane of the eye.And I wonder what are "onion tears"? I decided to test this experimentally.
Why do we cry from onions? Is it possible to cut an onion and not cry?
Tearing increases to protect the eye. This is a natural reaction of our body.
That's how I started cutting onions....
Still, the onion made me cry ...
Studies have shown eIf the onion is frozen before peeling, then the activity of the lachrymator is sharply reduced. And now he finds his explanation why the onion is cleaned by wetting it or a knife with water - the lachrymator dissolves in water and practically does not escape into the air.
Now I'm certainly not afraid of onions !!! He won't make me cry!!!
I defeated him!!!
Now I know why adults moisten it and the knife with water before peeling the onion - the substance is practically not released into the air, as it dissolves in water. This I have tested and proved from my own experience.
However, eating onions is essential. Moreover, it stimulates the appetite and helps the body absorb nutrients better. Health needs more attention. And if you periodically consume onions, then you will definitely strengthen your health and well-being!
Therefore, do not be afraid to cry when peeling the onion, but think about the benefits that it will bring to your body.
You can conduct an experiment to find out the benefits of tears.
Take an ordinary ball, imagining that this is our eye. Lightly blow sand on it, as the wind blows dust particles to us. The ball will become dry and dirty. But if you pour plenty of water on it, as a tear wets our eye, it will become clean! It also serves as proof that tears are necessary for us!
CONCLUSIONS:
- Tears are involved in the supply of nutrients to the cornea of the eye.
- They perform a protective function - they clean the eye from foreign objects. When tears are released, the surface of the eyeball is wetted.
- I learned that tears taste salty because they contain substances similar to salt and soda, as well as proteins, fats and water.
- Tears are good for a person, they wash the eyeball, but you should not cry all day and night long.
- Tears can freeze, but at a very low temperature of about -40° C, but in ordinary life this doesn't happen.
- Men cry less often than women, not because they are stronger, but because male hormones prevent the accumulation of tear fluid, that is, men simply have fewer tears.
- In my work, I confirmed that tears can be obtained not only naturally, but also artificially, knowing their composition.
- And I also learned why we cry from onions, and how to make onions become our friend, and we no longer cry from them.
Conclusion
Our research work allows us to conclude that tears accompany a person all his life, they are with him in grief, in joy, in peace, and in stress.
During its research work we not only achieved our goals, but also confirmed our hypothesis that tears are not an excess of water in our body, but the substances it needs, which it itself produces.
Tears are salty, because there is salt in the human body, but it turned out that not only salt is in the composition of tears, but also other substances.
Of course, our tears do not know anything about the world of people and they roll from our eyes not to see the “world”, they wash away everything superfluous and unnecessary from our eyes, and sometimes remove stress hormones, which helps not only the eyes, but also relieves the soul .
Tears flowing from our eyes in moments of joy and sadness, in a state of stress, relieve not only our body, but also our soul, help to cope with stress and, due to this, allow our heart to contain emotions. Data modern science they say that sometimes, when it becomes necessary, you need to cry and not be ashamed of your tears. Tears heal, tears bring back to life, tears not only wash the eyes, but also purify the soul.
Literature
- New student encyclopedia.
Let's turn to the theory In a plant cell there are all organelles that are characteristic of a living cell: the nucleus, the endoplasmic reticulum, ribosomes, mitochondria, the Golgi apparatus. At the same time, it differs from a living cell in essential structural features: - a strong cell wall of considerable thickness; - special organelles - plastids, in which primary synthesis occurs organic matter from mineral due to the energy of light; - a developed system of vacuoles, which largely determines the osmotic properties of cells.
The plant cell, like the animal cell, is surrounded by a cytoplasmic membrane, but, in addition to it, it is limited by a thick cell wall consisting of cellulose, which animals do not have. The cell wall has pores through which the channels of the endoplasmic reticulum of neighboring cells communicate with each other. The vacuoles are surrounded by a membrane and develop cisterns of the endoplasmic reticulum. Vacuoles contain dissolved proteins, carbohydrates, low-molecular products of synthesis, vitamins, and various salts. The osmotic pressure created by substances dissolved in the vacuolar juice leads to the fact that water enters the cell, which causes turgor - the stressed state of the cell wall. Turgor and thick elastic cell walls provide plant strength to static and dynamic loads.
We set ourselves the hypothesis: "If you cut onions in an underwater mask, then we will not cry." Equipment: bow, knife, cutting board, underwater mask, camera. Participants: Petrova Sveta. Time: 12:00. Artwork description: Sveta put on an underwater mask. On the table is a cutting board, an onion head, a knife.
Time 12:20. Sveta cut the onion into a paste-like mass, and so far there are no tears in her eyes. Our team is crying, standing next to Sveta. Time 12:23 - the experiment is completed. Conclusion: We justified the hypothesis. Indeed, if you cut an onion in an underwater mask, then we will not cry. The experiment took 23 minutes.
We put before ourselves a hypothesis: "If we cut a meadow with a husk behind our ears, then we will not cry." Equipment: bow, knife, cutting board, underwater mask, camera. Participants: Ivanova Sveta. Time: 13:00. Artwork description: Sveta put the husk behind the ears. On the table is a cutting board, an onion head, a knife.
At 13:02 Sveta started the task. After Sveta cut the onion into two halves, we asked her how she was feeling. After making sure that there were no tears in her eyes, we continued the experiment. Time 13:04 - Sveta continued to cut the onion, and after 1 minute 22 seconds Sveta felt a slight burning sensation in her eyes. Experiment progress:
From the experiments we conducted and the literature we studied, we refuted our main hypothesis and made the following conclusions: The gas released from the onion cells when we cut it, and not at all strong smell makes us cry. When this gas interacts with the mucous membrane of our eyes (or rather, with its water component), sulfuric acid is formed, which irritates the mucous membranes of the nose and eyes.
And finally, a few recommendations: Very good to use for cutting onions sharp knife, which will allow you to quickly grind it, and thereby reduce the release of gas. Other a good idea: cut off the onion root last or not cut at all, since this is the part that produces the most harmful gas. And the least shy of us can just put on the right goggles and chop onions to our heart's content.
Municipal educational institution
"Maloderbetovskaya secondary school No. 2"
RESEARCH WORK ON THE TOPIC:
"Where do tears come from"
Completed by: Bagandalieva
Evelina
3rd grade student.
Supervisor:
Tolmacheva L.I.
primary school teacher
With. Small Derbets
Page
Introduction ______________________________________3
Theoretical part____________________________4-6
Conclusion __________________________________________6
Bibliography__________________________________7
Annex________________________________________________8-15
Introduction
Relevance
In June 2016, my brother David appeared. He cries a lot. Sometimes he has tears in his eyes, and sometimes he cries without tears.
To help, my grandmother came to babysit her brother. When we go for a walk with her, tears flow from her eyes involuntarily. I asked her: “Why are you, grandmother, tears pouring from your eyes?” Grandmother replied that it was from weak blood vessels in the eyes. I wondered why we cry...
Research objectives:
Find and study information about the cause of crying, about the mechanism of tearing in the scientific literature, on the Internet.
Collect interesting material about tears, about crying.
Research objective:
Analyze the collected information and draw conclusions about the role of crying and tears in a person's life.
Object of study: family members, students elementary school.
Subject of study: mechanism and causes of tearing
Hypothesis:
I think tears are good.
"Man is born to cry" / Edgar Poe /.
Research methods:
Analysis of material taken from the literature on the Internet;
Comparison of information from various sources;
Testing among classmates on the topic "Crying";
Monitoring family members;
Bow experience.
Theoretical and practical significance:
I propose to use this material in intellectual games, at the lessons of the surrounding world when studying the topic "The eye is the organ of vision".
Theoretical part
Watching relatives, having studied the materials, I found out that we, it turns out, cry every day. Every time we blink, we cry! Why is this happening?
The point is that under outer corners both eyes are lacrimal glands. Each time the eyelid closes, it makes a pump, with the help of which a certain amount of fluid is pumped out of the lacrimal gland. This fluid is called tears. Tears irrigate the cornea of the eye to prevent it from drying out. If something irritating gets into the eye, the eyelid blinks and tears come out to flush the eye.
Reasons for crying(Attachment 1)
Cry, burst into tears, roar, sob, sob, whimper - how many words are there to express this simple action! We cry when we are offended; we cry when we lose loved one; crying from physical or moral pain; we cry when we are sad, scared; crying while watching a sad movie; we cry for joy; crying from onions...
Let's analyze in detail the reasons for crying.
Crying of a small child
Everyone has been crying since their birth. My little brother is 5 months old. He cries a lot! What are the reasons for his crying? He cries when he is hungry, when he wants to sleep. Cries when sick. When he gets tired of lying alone, he draws attention to himself by crying. We take him in our arms and he calms down. Therefore, the tears and cries of a small child are a way of communicating with the world. And when crying, the liquid wets the baby's nose, mouth, which protects it from viruses and bacteria.
Are my classmates crying?
Among my classmates, I tested on the topic "Crying". The analysis showed that both girls and boys cry, but girls cry more often. Most often, children cry from resentment and pain. After crying, everyone experiences a sense of relief.
Scientists have studied the composition of tears and found that they contain harmful substances that are harmful to the young body. Crying keeps children healthy.
Female and male crying
More than once I saw tears on my mother's face, I saw a crying grandmother and aunt. What is the reason for their tears? Mom cries from resentment, from worries about us when we are very sick, she cries to tears from laughter. Grandmother cries when meeting and parting with us. This is how she shows that she loves us. But I didn't see my grandfather, dad, uncle crying. From these observations, we can conclude that women cry more often than men. According to statistics, women live longer than men. The short life of men is explained by the fact that they hold back their emotions. They accumulate inside and undermine health. Women give vent to their emotions and salty tears. This brings them a sense of relief and calmness.
And I also heard the phrase: “Whoever laughs a lot and contagiously, that lives longer". Why do tears appear when laughing? This is because with strong laughter, the muscles squeeze the lacrimal glands and tears begin to flow.
Why does an onion make you "cry"?
When my mother peels and cuts onions, she cries. Every woman is constantly faced with this insidious vegetable that makes her cry. I decided to conduct an experiment, will I cry when peeling and cutting onions. Yes, I cried. Well, why do we cry from onions?
When we cut an onion, we cry because of the fumes emitted by the onion. The bulb releases volatile sulfur that enters our eyes, mixes with tears and forms a liquid that burns our eyes. Tears appear to protect the eyes. Is it possible to avoid tears when peeling onions? Can. And I tested it myself. You need to get water in your mouth so as not to cry. And my mother wets the bow and knife with water. volatile matter dissolves in water and does not cause tears.
Why do eyes water from the cold?
On the street, not only my grandmother’s eyes water, but my brother’s, and he is only 7 years old. When I looked closely, it turned out that in the cold season on the streets you can see a lot of crying people.
And in the process of work I found the answer to the question posed. Cold air and wind irritate the eyes. There is a narrowing of the nasolacrimal canal, and the fluid comes out of it.
I also found a way to protect against tears in the cold and advised his grandmother. You must wear sunglasses with curved lenses (sports). Also, when studying the material, I noticed that the shape of a person’s eyes depends on climatic conditions residence. Before you is a representative of the indigenous peoples of the North. The shape of his eyes is the result of adaptation to living in the Far North. To protect against rain, snow, wind and the bright sun, the Khanty, the Nenets use such glasses.
Piggy bank of interesting facts about crying and tears
While studying the material, I came across interesting facts.
The human body produces a whole glass of tears every year, regardless of the age or gender of people.
A person cries about 250 million times during his life. The most whiny are Americans, Nepalese and Germans.
A girl from India has been crying tears of blood several times a day since 2009.
A Lebanese girl has crystals the size of grains falling out of her eyes. There are twenty or more of them per day. It doesn't cause pain.
Conclusion
conclusions
Thus, based on my observations, experiments, tests, after analyzing the collected information about crying, tears, I came to the conclusion that crying is good:
Tears are needed to keep the eyes healthy.
The tears of children are a way of communicating with the world.
Tears are an expression of human emotions.
Tears help prolong life.
Bibliography
Brochure “200 answers to questions from young parents”, V.P. Erkov, 1990. -
Encyclopedia for the curious "Why and why?", Moscow "Makhaon" 2007. - [p.232]
Encyclopedia of man. Transitbook Astrel AST, Moscow, 2006.
Victoria Sogomonova "Hack your life", 2009.
Magazine " Home» №3, 2010.
Articles from the Internet.
Introduction One day I saw my little sister
Anya was crying. I became very interested
where do tears come from? Are they helpful? From
what do they consist of? Why do we cry for
Luke?
The purpose of the study: to study why we cry and to investigate where tears come from, their composition.
Tasks:- learn how tears appear;
- find out how tears are useful;
What are tears made of?
- figure out why they are salty;
- try to conduct an experiment with a tear yourself. Hypothesis:
find out what tears or tears are -
is excess water in our body and
when there is a lot of it, we want to cry,
or tears are needed by our body and
he makes them himself;
let's say they're salty, because
there is salt in the human body; Object of study: human tears
the old Russian form from the Old Slavonic language meant - "rinse, make clean." Subject of study: process
the appearance of a tear Research methods: analysis
literature and Internet sources;
experiment; own observations and
conclusions.
How do tears appear?
-In our eyes there is a special bag in whichwater and through a special vessel flows out of our eyes in the form
tears. But how do they get into this bag?
Tears are a clear liquid produced by the lacrimal
eye gland.
The lacrimal glands constantly produce tears. Tears
enter the eye through a small duct that opens into
outer corner of the eye. Every time you blink your eyelids
spread the tear in a thin layer over the surface of the eye. Then
tears flow through the tubule located at the inner
edge of the eye, closer to the nose. These tubes end in
nasopharynx, where “used” tears flow. .
Tears are constantly flowing.
Tears contain the enzyme lysozyme
which neutralizes bacteria, and does not give
cause dangerous infections.
Tears are one of the most important elements
our body.
A thin tear film covers the surface
eyes with every movement of the eyelid, it serves
eye lubricant. Thus, such
film protects our eyes from exposure
air and all sorts of parasites called
microbes. Are tears helpful?
It turns out that tears contain psychotropic
substances that relieve stress
and it is for this reason that weeping brings us
relief. So our tears are very important
functional element of our body.
Crying well is always good! And not
only for the eyes, but also the nasopharynx. Our tears
wash and kill bacteria. When the body
sick, and there are a lot of bacteria in it,
then the temperature rises
and a defensive reaction of the body is triggered.
There is tearing. So, I found out that:
tears are involved in the supply of nutrients to the cornea
eyes;
perform a protective function - they cleanse the eye from
foreign objects;
when tears are released, the surface of the eye becomes wet
tears can be an accompaniment of emotions (tears during
crying or laughing.)
when a person cries, lacrimation usually occurs - this is
active secretion of large amounts of tears.
And so that tears do not leave edema and swelling, cry
you need it right - in a cool room, sitting and not
wiping with a handkerchief. In general, what does our tear consist of? From what substance?
Tears are mainly composed of: WATER; BELKOV; FAT; SALT; SODA;
Our tears do not linger on the surface of the skin, because they are covered with thick oily
film, it contains lipids (an extensive group of natural organic
compounds, including fats and fat-like substances).
Therefore, the tears that flow down our cheeks taste salty. Our tears
These are not the saltiest tears in the world.
For example, the body of sea gulls that feed on ocean fish contains
a large amount of salt. Tears help seagulls get rid of excess salt, then
eat salt is excreted from the body with tears, which means that tears contain it very much
a lot of.
If birds remove excess harmful salt with tears, then maybe a person
crying, also gets rid of something harmful?
When we experience strong emotions or pain, our brain releases substances that
signaling excitement or harmful stress, and our body
produces special stress hormones. Scientists have indeed found
tear fluid some of these signaling substances and stress hormones. That
eating tears helps us get rid of excess substances that are formed in
the result of strong emotions. As these substances are removed, we
we start to calm down. Many people say that after they cry, they feel
a feeling of freshness, like after a cool summer rain. Of course you shouldn't cry
day and night long, but crying a little sometimes is not harmful, but very
good for our health.
Crying really relieves stress. However, scientists recommend crying not
over 20 minutes. Otherwise, bags under the eyes, redness, and,
finally, crying can turn into a tantrum, which will aggravate your condition. Maybe,
I’m burning with tears and you won’t help, but you’ll definitely relieve nervous tension. Why do we cry from onions? Is it possible to chop an onion and not
cry?
Tearing increases to protect the eye. It's natural
our body's response.
That's how I started cutting onions....
Still, the onion made me cry ...
Studies have shown that if onions are frozen before peeling, then
the activity of the lachrymator is sharply reduced. And now he finds his
explanation of why an onion is cleaned by wetting it or a knife with water - lachrymator
dissolves in water and is practically not released into the air.
Now I'm certainly not afraid of onions. He won't make me cry.
I defeated him.
Now I know why adults moisten it and the knife before peeling onions.
water - the substance is practically not released into the air, since
dissolves in water. This I have tested and proved from my own experience.
However, eating onions is essential. Moreover, it excites
appetite and helps in better absorption of nutrients by the body.
Health needs more attention. And if you will
periodically eat onions, then you will definitely strengthen your
health and wellness!
Therefore, do not be afraid to cry, peeling the onion, but think about the benefits,
that it will bring to your body.
Conclusion:
In my research, I found that people reallycry from emotional experiences (joy, stress,
resentment), and more often because of this, women cry.
Tears are for the body the best protection. They bring out
poisonous toxins, contribute to the rapid healing of wounds,
have a calming effect.
The ability to cry is one way to express your
the senses.
Their main task is that on a pain signal
lacrimal glands begin to secrete biologically active
substances that accelerate the healing of wounds or bruises.
So if you're hurt, cry to your health - faster
will live!!!
Crying is very helpful!
