Why are some animals still alive even if the blood freezes?

Some animals can still stumble into the road even when their body temperature is less than 0 degrees Celsius.

Most animals hate the cold weather. When winter comes, they often have different methods to avoid coldness such as burrowing underground, migrating away from home, some take advantage of the natural cavities . to snuggle to sleep.

North American bears hibernate.

However, there are still many animals that survive the winter without avoiding cold weather. It seems that they are immune to the cold when comfortable "wrinkling" to roam outdoors without any harm.

Face score of some animals has cold tolerance "level of peak"

Weather below 0 degrees Celsius is really a "disaster" for most types of organisms because at this temperature water will freeze again. Freezing does not only happen to living water but also to living water.

In the body, water exists primarily in cells. When the water freezes, the cells will freeze, bulge and tear, causing death to the body. However, not all species suffer from this effect, some animals have their own secrets to survive in harsh weather environments.

The first is a forest frog called Rana sylvatica . This is a frog living mainly in North American forests and Arctic regions. Forest frogs are able to withstand temperatures dropping to minus 14 degrees Celsius.

Forest frog Rana sylvatica.

Besides, we have to mention the Antarctic mosquito . Although it is only a low-weight insect, the coldness of this mosquito is also very terrible. They can function normally at minus 20 degrees Celsius without any problems.

Some insects have low weight but have very good cold tolerance.

There is also a "great" achievement like the Antarctic mosquito is an Alaskan beetle . This insect can survive under conditions that no animal likes. However, the location of this beetle is not in cold places like the two poles of the Earth.

Alaska beetle.

In addition, it is necessary to mention that some species of tuna when they can control body temperature very well, so there is no need to worry about the body temperature decline in cold environment.

Discover the cold tolerance of animals

Each animal has a different method of avoiding cold, depending on the body composition of each species.

We all know frogs are cold-blooded animals. So it is obvious that they can change their body temperature to match their ambient temperature.

But frogs can only change their body temperature to deceive their senses, but if they put frogs in a pot of boiling water, they will be boiled and frozen.

Frogs can change their body temperature to match the ambient temperature.

Realizing that, forest frogs Rana sylvatica has been somewhat evolved for other frogs as they have the ability to secrete cryoprotectants , a "miracle" substance that helps prevent freezing in cells.

Good cold-resistant animals have the ability to secrete cryoprotectants, helping to prevent freezing in cells.

Cryoprotectants is a chemical compound used to store frozen foods. Cryoprotectants are used to help food not degrade in environments below 0 degrees Celsius.

For organisms, this compound protects biological tissues and cells, helping the body minimize the damage and damage caused by low temperatures.

Not only forest frogs Rana sylvatica, some insects in the Arctic and Antarctic, other fish and amphibians also have the ability to secrete this substance to protect the body in cold weather.

Antarctic mosquitoes often use self-draining methods to avoid freezing.

Another method is also used by many species, but in the insect world. Antarctic mosquitoes, Alaskan beetles or many insects use self-draining methods to avoid freezing.

As we know, low temperature will cause water in the body and cells to freeze. Therefore, in order to avoid being frozen, many insects automatically "flush" water out of the body.

Low temperatures will cause water in the body and cells to freeze.

Most insects can survive when losing 20-30% of water in the body. But Antarctic mosquitoes can discharge up to 70% of water but still live normally. This helps them survive when the temperature drops to -20 degrees C.

After draining the body water, the metabolism will be halted and the insects will now look like corpses. But these bodies can live through the winter thanks to their ability to effectively preserve themselves.

Low temperatures will cause water in the body and cells to freeze.

Measures to preserve the body in the low temperature environment of the animals will be important examples, helping scientists soon find effective methods for organ preservation and development. organ transplant industry for humans.