Why do you always shed tears when you yawn, and why do you sometimes shed tears when you yawn

When I'm sleepy, I always yawn. When you yawn, your eyes will always be full of tears, why do people shed tears when they yawn?

Human tears are secreted all the time, flowing on the surface of the eyeball. However, there is very little tears secreted and they flow along the surface of the eyeball and in the tiny spaces inside the eyelids, so you don't feel that the tears are flowing.

However, in the blink of an eye, the tears on the surface of these eyeballs are sucked into the nasolacrimal duct, the sewer of the tears. Don't underestimate this not-so-long tube, it's the only way for tears to reach your nose. The lacrimal glands constantly secrete tears, and the nasolacrimal ducts constantly excrete tears, so people usually do not shed tears.

When a person yawns, his mouth is wide open, and he may exhale more than he can out of his body in order to exhale carbon dioxide and inhale oxygen. With the action of yawning, a stream of gas exhales forcefully from the mouth. The muscles of the cheeks, tongue and throat tense and contract, and the pressure in the mouth and nose increases.

As a result of the increased pressure in the nasal cavity, it will temporarily block the work of the nasolacrimal duct to excrete tears, and the "sewer" will not be passed, and the tears will not flow, and more and more tears will accumulate in the eyes. There will be tears in his eyes, and finally he will burst out of his eyes and flow to his face.

We yawn when we are very tired, very tired, or sleep deprived, and every time we yawn, we are in tears, why do people shed tears when we yawn?

This is normal. Mainly when yawning, squeezing the lacrimal sac causes tears to flow out.

This is a normal physiological phenomenon! No problem!

Tears are stored in the lacrimal sac, and when the tear duct is open, they are usually not expelled or can enter the nasal cavity through the nasolacrimal duct. Facial muscle tension during yawning will cause increased pressure in the mouth and nasal cavity, and tears cannot flow into the lower nasal passages and tear ducts, yawning and tears will occur, mostly caused by drowsiness and other factors, usually relieved after rest.

Tears are a weakly acidic transparent colorless liquid, which contains water, inorganic salts, proteins, lysozyme, immunoglobulin A and other substances. Occasional yawning accompanied by tearing is mostly normal and does not require intervention, but if this symptom occurs for a long time, there may be cerebrovascular disease or obstructive sleep apnea-hypopnea syndrome and other diseases, which need to be timely ** to avoid adverse consequences such as respiratory failure.

If the patient has frequent tearing regardless of whether he yawns or not, it may be related to the occlusion of the tear duct caused by diseases such as punctal blockage, dacryocystitis, and nasal tumors. At this time, it is recommended that the patient go to a regular hospital for treatment in time.

Maybe it's because of the exhaustion of the mind, you can try waking up every morning, sitting still for a few minutes, not thinking about anything, and keeping your breathing smooth. When you wake up, it is also before going to bed at night

:(1) Conjunctivitis (2) Keratitis or corneal foreign body (3) Inversion of eyelids (4) Trichiosis (5) Eye fatigue. The causes of poor excretion are: (1) dacryocystitis, (2) occlusion or stenosis of the lacrimal ducts, and (3) obstruction of the nasolacrimal ducts.

Yawning is a normal physiological phenomenon, when people are tired and tired, the breathing gradually changes from deep and fast to shallow and slow, so that the oxygen content of the world in the blood decreases, and the brain and other important organs are in a state of relative ischemia and hypoxia; The respiratory center in the brain, which is responsible for breathing, will send a signal to take a deep breath, which is manifested as a yawn, so that the intake of oxygen can be appropriately increased to relieve brain fatigue.

Tears do not exactly indicate a change in mood. For example, 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 Rejuvenate microlocust bacteria and keeping the eyeball moist,。。 These two autonomic self-regulatory functions of the body that control deficiency search can form a link in some people. Therefore, it is normal to shed tears when yawning.

Everyone should have a sleepy time, after being sleepy, people will yawn unconsciously, and then they will find themselves in tears, sometimes they can't cry when they want to cry, but they will cry when they yawn easily. There may be a lot of people who don't pay much attention to this and think it's okay, but there are still some people who are very concerned. Let's talk to you, why do people shed tears when they are sleepy?

People will yawn unconsciously after being sleepy, when people are sleepy, blood circulation will be relatively slow, and some central enterprises in the blood have been consumed, but they can not be replenished in time, at this time the blood oxygen concentration in the human body is relatively low, and the brain will also have a slight lack of oxygen, and the human body yawning is actually inhaling more oxygen, so that the oxygen content in their body will be higher.

When people yawn, the mouth will generally grow very big, at this time the human body is exhaling carbon dioxide, inhaling oxygen, with the action of people yawning and then some facial organs will be tense and contracted, at this time the pressure in the mouth and nasal cavity will increase, resulting in the nasolacrimal duct excretion of tears, that is, tears.

Don't underestimate the nasolacrimal duct, it is because of the nasolacrimal duct that tears will flow out, and the first-class just can't stop, so I often see some people yawning, causing tears to flow directly to the cheeks, and some people don't know and think they are crying. In fact, it is not only people who shed tears when they are sleepy, but also when they laugh or sneeze or cough, and these principles are the same. If you feel that your eyes are dry, you can use these methods to promote the shedding of tears, which is a better way to do it, and it doesn't take much effort, just go at once.

I don't know if you have noticed that when you yawn and cry, you will feel that your eyesight is better than before, and you can see things more clearly, in fact, this is also a normal physiological phenomenon, and some people will want to make their eyesight better in a short period of time, so they use this method.

Some people don't know that they will shed tears when they yawn, and they think that they are a disease, and go to the hospital to see a doctor in fact, yawning and tears are a normal physiological phenomenon, you don't have to worry, this is also a common sense, you can usually know more about life knowledge, this is still very helpful to your life, and sometimes you can also identify whether you have some diseases.

This is because the human body is very tired, and the oxygen ** is not available, which leads to such a phenomenon in the body, and the moisture in the body is also expressed through the eyes.

Because when you yawn, you usually open your mouth wide. Compression of nerves. It causes our tear ducts to close temporarily. That's why there will be tears.

We yawn when we are tired, very tired, or sleep deprived, and every time we yawn after Xiaohui, we are in tears, why do people shed tears when Bi Zheng yawns?

For the sake of the service, who will fight and shed tears when yawning? Star Awareness Project

Why do people shed tears when they yawn? Star Awareness Project