Why does the body need water? Detailed answer

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Why does the body need water? Detailed answer

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Why does the body need water?

Approximately 60 percent of the human body is water! If you squeeze a person like a lemon, you can get about 50 liters of water. This water, which differs from ordinary water in the presence of various substances, is necessary for the life of the body. Approximately a gallon (about 4,5 liters) of this water is contained in the blood vessels, and a constant blood circulation is maintained by the work of the heart.

The water present in the blood washes all the cells of the body with a direct current. Water also serves as a conductor of heat throughout the body. Even if you do not drink water during the day, you will still get about a liter of liquid from the solid food you eat. Therefore, when you eat fruits, vegetables, bread and meat, you get water, since 30-90 percent of these foods are water.

In addition, each person on average drinks about two liters of water in the form of various drinks. During the day, approximately ten quarts (1 quart - about 1 liter) of water circulates between the various organs in the body. For example, when you chew and swallow something, you also swallow some of the saliva coming from the salivary glands. After a short time, this water is replaced in the glands by water from the blood vessels. And the swallowed water subsequently enters the blood from the stomach and intestines.

The amount of water in the blood always remains constant. Even when you feel completely "dry" after exercising in hot weather, your blood vessels still contain the same amount of water. And no matter how much liquid you drink, this amount remains the same.

What happens to excess water? It accumulates in different parts of the body: in the intestines, liver, muscles and kidneys.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How do plants eat?

Oddly enough, it will sound, but plants have their own "factories" for the production of food. These "factories" are green leaves. We all know that both peaches and apples taste sweet, which means that they contain sugar. Where does it come from? It is produced by the leaves of a peach or apple tree, which draws the products necessary for this from the soil and air.

One of the components - carbon dioxide - the leaves independently absorb from the air. The other is moisture - the roots of the tree are extracted from the soil. These two substances are enough for plants to produce sugar. It should be noted that the process of synthesizing food takes place in the leaves only under the influence of sunlight and therefore received the name photosynthesis. "Photo" in Greek means "light". Many plants, however, as we know, do not have sweet fruit or juice. This does not mean that their leaves do not produce sugar, but that it is converted too quickly into unsweetened starch or protein.

Of course, plant food factories, just like any other, require machines. In the leaves, small green bodies - chloroplasts - act as machines. Their color is due to the high content of green matter - chlorophyll. The energy that drives the "machines" is supplied by the sun. In general, the food production process proceeds as follows. Plant roots take moisture from the soil. Water rises along them and further along the stem and branches until it enters the vessels on the leaves.

Then it spreads over them and, hitting each cell, gets to the chloroplast. Along with water, the leaves also receive food that was previously produced by the plants themselves, but did not get into the places of accumulation of nutrients: roots, fruits and seeds. At the same time, the leaves absorb air containing carbon dioxide. Between this gas and water in chloroplasts, under the influence of sunlight, a chemical reaction occurs and starch or sugar is formed. Following this, the resulting nutrients are carried through the same vessels throughout the plant's body.

In addition, the leaves have to get rid of unnecessary substances and waste products absorbed in the process of creating food. Therefore, the remaining unused most of the air, enriched with the same oxygen produced during photosynthesis, is released into the atmosphere through stomata - small holes between the cells on the underside of the leaf.

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