How do people breathe in water, can people breathe underwater

People can't breathe underwater.

If special means are taken to dissolve enough oxygen in the water, the lungs can obtain enough oxygen in the water, that is, they can breathe in water by absorbing water for a period of time, but the water dissolves carbon dioxide less, and cannot bring out the carbon dioxide in the blood, and eventually suffocates with the increase of carbon dioxide in the blood, which is of course very painful.

If you use perfluorocarbon liquid, it is not the same, it has a high solubility of oxygen and carbon dioxide, and people can't drown in perfluorocarbons, but this set of lungs specially designed for air does not work so smoothly for liquids, and the oxygen exchanged by perfluorocarbons may not be sufficient, but it will not drown.

Web linkDogs can survive for half an hour in oxygen-rich water.

The web links to reports on perfluorocarbons.

People can't breathe in the water, and the water will definitely get into the eyes.

The human respiratory organ is the lungs, and the lungs can only absorb oxygen from the air, so sometimes people choke when they drink water, that is, they are still breathing while drinking water. Therefore, people cannot breathe in the water, cannot exchange water and oxygen, and cannot survive underwater. Fish breathe with gills, and their gills can absorb oxygen from the water, and they can exchange nutrients for water, so they can survive underwater.

Similarly, because the gills of the fish cannot draw oxygen from the vigills, which are filled with capillaries, the capillaries can exchange gases, and when the fish swallows a mouthful of water, the food is eaten, and the water is expelled from the posterior edge of the gill cover. When water flows through the gills under the gill cover, the capillaries begin to exchange gases, i.e. carbon dioxide is excreted into the water, and oxygen enters the capillaries and participates in the blood circulation. Therefore, the larger the contact area with water, the more oxygen passes.

On the shore, the gills are brought together, the surface area is reduced, and gas exchange is not well carried out, which is one of the reasons.

In fact, the main reason is that the fish cannot obtain the oxygen that is insoluble in the water, so the fish cannot get enough oxygen on the shore and eventually die of lack of oxygen. In the same way, animals on land, including humans, breathe with their lungs, and the lungs can only exchange gases with the air on land.

The second problem is that water must enter the eye, because water is pervasive. Therefore, when diving, you will always wear diving goggles. If you don't bring it, you will feel uncomfortable when you just open your eyes in the water, and if you open your eyes in the water for a long time, it will also cause your eyes to be red and swollen because of bacterial infection.

So try not to keep your eyes open in the water.

You can't breathe at the bottom of the water, and the Gillis record should be dozens of minutes, and you can dive to dozens of meters underwater, depending on your lung capacity; At present, watching cartoons, there are two situations in which you can breathe underwater, one is to have Doraemon, the other is to have a submarine, which can breathe underwater, or there is diving equipment, or there is a tunnel by the sea, an underwater world or an undersea restaurant, in other cases, you can rely on your own fantasy, not to mention underwater, space is possible, anyway, I am a person who holds back for half a minute, and living well is the last word.

Mermaids can, but humans cannot, because people don't have gills like fish, and they can take in oxygen dissolved in water, and people rely on their lungs to absorb oxygen in the air. So man can't live in water like a fish. Aquatic animals can directly exchange dissolved oxygen in water, and gills do this, while human lungs can only exchange with gaseous oxygen, and can only breathe gaseous oxygen, and isolating the air underwater will naturally suffocate.

No. Some people who have been trained can maintain their life activity underwater by lowering their heartbeat and reducing their oxygen consumption. But when it comes to not breathing underwater.

Fish, like people, have to breathe oxygen to survive, and there is oxygen in the air and water, and the lungs of humans can separate oxygen from the air but they can't absorb oxygen from the water, so people can only live on land, but they can't breathe in the water, and most fish don't have lungs, but they have gills, and the gills of fish can separate oxygen from the water, so there are some fish, in addition to gills, and lungs, so those fish can live on land for a while, some of them can only live for a few hours, and some of them can live for a few days Others can even live on land for a few years.

Humans cannot breathe underwater because human lungs do not have a large enough surface area to absorb enough oxygen from the water, and the internal structure of the human lungs is better suited to handle air than water. However, humans have tried to breathe in other liquids, such as fluorocarbons. Fluorocarbons dissolve enough oxygen so that the lungs can absorb it out.

Humans can usually hold their breath in the water for less than 2 minutes, and after systematic training, the time of holding their breath in the water may be extended.

As evidenced by the Guinness Book of World Records, the longest underwater breath-holding time for a human can reach 22 minutes and 2 seconds, is done by a Danish physician.

In addition, the duration of breath-holding will also be determined by the physical condition of the day and the amount of exercise underwater, the greater the amount of exercise, the greater the oxygen consumption, and the shorter the breath-holding time.

Note: People are not allowed to breathe underwater, but they can hold their breath underwater to consume oxygen in their lungs.

Can people breathe freely under the pool and their clothes won't get wet? After reading it, I realized that I had been deceived.

People can't breathe underwater, and they need equipment to breathe underwater.

No, you can't. Unless there is an outside oxygen cylinder.

People rely on their lungs to absorb oxygen from the air. So man can't live in water like a fish. Aquatic animals can directly exchange dissolved oxygen in water, and the gills do this, while the human lungs can only exchange with gaseous oxygen, and can only breathe gaseous oxygen, isolating the air underwater and exhaling naturally.

The answer above is obviously not what is asked.

Four simple words: breathe in and out of the nose. It's okay to drink some water in your mouth, but it's uncomfortable to get water in your nose, so your nose is used to exhale.

Also, I tried taking a big breath of air first, and then inhaling it into my lungs to hold on for a little longer.

People can't breathe in the water, they need to be assisted by equipment, that is, oxygen tubes, otherwise they need to rely on the way of swimming to assist breathing.

It seems that it is impossible to breathe in the water, and the only way to breathe is to breathe when the respiratory organs leak out of the water.

How do you breathe while swimming? Teaching of conscience, have you learned it after reading it?

That's called internal breathing, it's just **.

I can't believe this question myself.

How can you breathe in the water? To breathe you have to be on the water!

If we are to breathe in water, we have to introduce water from the nose into the lungs, which can lead directly to lung damage: either the lungs lose water or the lungs are edema...So as far as the existing structure of the human body is concerned, it is impossible to complete.