Why are we thirsty? Detailed answer

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Why are we thirsty? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Did you know?

Why are we thirsty?

When we are thirsty, but there is nothing to satisfy this desire, we suffer so much that we cannot think of anything else. We all get thirsty from time to time, but imagine how it feels to feel thirsty for long days. If a person has absolutely nothing to drink for three weeks, he dies.

Our body just needs to restore its fluid supply, and this despite the fact that from 50 to 60 percent of our weight is water! Indeed, during the course of a day, the average adult loses about two-thirds of a liter of fluid through sweat and releases about a liter of fluid when they get rid of waste.

On the other hand, whether we drink or not, we also take in water, because when we digest food, we get from it almost a third of a liter of fluid per day. But this process of water loss and its replenishment is not enough to maintain the water balance necessary for the body. Thirst is our body's signal to us that it needs more water.

Dryness in the mouth and throat is not always caused by thirst, as many believe. It can be due to many reasons, such as a nervous condition, exercise, or slowing down the flow of saliva. It is possible to increase salivation (for example, with a little lemon juice), but this will not eliminate thirst.

You may salivate well, your stomach and bladder may be full of fluid, and yet you will be thirsty! For example, you can drink several shots of whiskey at a bar and still feel thirsty if you chew salted peanuts between them.

The fact is that thirst is caused by a change in the salt content in the blood. There is a certain normal amount of salt and water in our blood. Thirst is the result of more salt than water.

There is a "thirst center" in our brain. It reacts to the amount of salt in the blood. When changes occur there, it sends messages to the back of the throat. Response messages from there are returned to the brain, and this operational connection allows us to say that we feel thirsty.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why don't snakes have legs?

The absence of legs in modern snakes does not mean that they never had limbs. But how and when the snakes "lost" their legs is not known to science. Some scientists believe that some species of shrew lizards, which have survived to this day, were the ancestors of the snake. All these lizards have very short legs or none at all.

But, despite the fact that once all the legs of the snake disappeared at once, they by no means lost the ability to move and do without them very well. Convex plates located on the belly help the snake to move.

There are four different ways for snakes to move.

1. Lateral wave-like movement. The snake sequentially describes wavy curves with its body, similar in shape to the letter S, and, pushing off the body from the unevenness of the soil, glides forward.

2. Rectilinear motion. Small groups of plates on the belly push forward part of the body of the snake, while the rest of the plates are thrown back, creating a support for the body. After that, the plates that have moved forward hold the body while the plates of the back of the body are pulled up to them.

3. Spiral motion is used for tree climbing. The snake wraps its tail around a tree trunk and, throwing up the front part of the body, catches on the tree at a certain height, after which it pulls up the lower part of the body.

4. Side travel. Moving in this way, the snake throws the front part of the body sideways, after which it pulls up the back part and repeats the same operation.

Test your knowledge! Did you know...

▪ When did humans start using salt?

▪ What are carnivorous plants?

▪ How has the likelihood of brain injury changed since the introduction of boxing gloves?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Samsung processors with neural network 31.08.2016

Samsung has revealed some details about the structure of the cores of its own design Mongoose, which are used in the Exynos 8890 Octa processors of the Samsung Galaxy S7 and S7 edge flagships. Mongoose kernels use a neural network to predict processor instructions.

In total, the Exynos 8890 Octa has eight cores. Four of them are Cortex-A53, they operate at up to 1,6 GHz, the other four are Mongoose, which have a maximum clock speed of 2,3 GHz.

In modern processors with a pipelined architecture, a branch predictor is used. This is a special block that predicts the next commands that will come to the processor from the application. Instruction prediction helps to load the pipeline and reduce idle time, that is, in general, increase the efficiency of the processor.

In Mongoose kernels, the transition predictor is based on a neural network. Brad Burgess, chief architect of Exynos processors, said that the use of a neural network allowed the company to obtain a fairly high forecasting accuracy.

Mongoose cannot be used in servers as they do not support L2 cache and vectorization.

Other interesting news:

▪ Light curtains F3ET and F3EM

▪ Motherboard MSI Z87 MPOWER MAX AC

▪ Horizontal wind turbine

▪ Duplex scanning with HP Scanjet 5590

▪ Lipstick Headphones

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Signal limiters, compressors. Article selection

▪ article The obvious is the incredible. Popular expression

▪ article Why was the Soviet football player Alexander Zavarov called beetroot in France? Detailed answer

▪ article Maid (housekeeper). Standard instruction on labor protection

▪ article Improved musical metronome. Encyclopedia of radio electronics and electrical engineering

▪ article Straightening match. Focus Secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews