What are the main ways in which the human body obtains water, and what are the main ways in which th

Humans can only get water by drinking and eating!

The exhaled air from the body when you breathe usually contains more water than you breathe in (unless it's at 100% humidity at a high temperature, but you may be starved of oxygen at this point).

Even if water can be obtained from the inhaled gas, the amount of water is unlikely to meet the body's needs.

Cells absorb water, which is normally present in the body and bathed in extracellular fluid.

cells. **Surface epithelial cells.

There is an excellent airtight structure between them, which can prevent the loss of water in the body and also avoid the infiltration of external water.

The claim that "cells can absorb water" stems from the false propaganda of unscrupulous merchants about the maintenance of ** products.

That is, "apply water to the surface of the ** to let ** absorb water". If you can really absorb water, there is no need to spend a lot of money to buy any hydrating skin care products, just soak in the bathtub.

There are 3 ways to get water.

Obtained from food (e.g. water from fruits, grains).

By drinking water. The water produced by metabolism (for example, the end products of sugar metabolism are water and carbon dioxide) is smeared with water on the **, and water cannot be obtained by breathing. He can only keep the mucous membranes moist and soft, and does not really get water.

1.The main sources of water supply to the human body are (water) and (food).

2.The internal factors that form the water cycle are (the characteristics of water that are easily converted into gaseous, liquid, and solid states under normal environmental conditions); External factors are (solar radiation and gravity, which provide the energy for the change of the physical state and movement of water to the water cycle).

As for the landlord's question (idealized, right?) ), should not be ......

There are three main ways for the human body to ingest water:

1. Drink directly into the body.

2. Intake of water in food, the main water in food is vegetables and fruits, in addition, porridge, rice, milk, fish and shrimp and other foods in daily life are also rich in water.

3. The endogenous water of the human body, that is, the water produced during the metabolism of proteins, fats and carbohydrates. According to China's Dietary Nutrition Reference Guide, in the absence of heavy sweating and basically suitable environmental humidity, adult men and women will have about 300ml of water from human metabolism every day.

A person's need for water is second only to the need for air, and each person should drink at least one liter of water per day to maintain water balance in the body. In addition, the human body has other waters**.

There are three ways to replenish the body's water loss: (1) drinking water and other beverages, which account for more than half of the total water source of the human body; (2) Water in solid food and water ingested at the same time as food (such as meals, fruits, etc.) account for 30% and 40% of the total water content of the human body; (3) The other 10% comes from the biological oxidation process of substances in the body.

Drinking water: Drinking water includes tea, coffee, soup, and a variety of other beverages.

Food water: Many solid foods contain a lot of water that can be used by the body. They are mainly found in various foods, some of which exist in the form of crystalline water, and some in the form of bound water, which can be absorbed by the body.

Metabolic water: Metabolic water is produced by the oxidation of nutrients in the body. For example, 41 ml of water is produced for every 100 grams of protein is completely oxidized, 55 ml of water is produced by 100 grams of carbohydrates, and 107 ml of water is produced by 100 grams of fat oxidation.

The camel's hump contains a lot of fat, which is inseparable from its ability to survive long distances in water-scarce deserts.

Food, fruits, vegetables, etc., can be drunk directly.

Water is the source of life, and the amount of water in the human body accounts for about 65% of its body weight. Without food, it is possible for a person to survive for about 6 weeks, but without water, life can only last for about 1 week. Therefore, we need to drink enough water every day.

1. Endogenous water: refers to the water produced by the body after digesting and metabolizing the proteins, fats and sugars ingested in the daily diet, and the amount produced per day is about 300 ml.

2. Water in food: refers to the water obtained by people ingesting various foods, such as water from fruits, vegetables, grains, legumes and animal foods, which can produce 700 1000 ml per day.

The four routes of human water excretion:

1. Excreted through the kidneys: that is, urine, about 1500 ml.

2. Intestinal discharge: that is, feces, about 150 ml.

3. Discharged by sweat: about 500 ml.

4. Breath discharge: about 350 ml.

Therefore, water is both a carrier for nutrients to enter the body's cells and a transporter for waste and toxins from the body to be expelled from the body's cells. Water and its accompanying metabolic waste products are used in the kidneys to produce urine and excrete metabolites; Maintaining fluid balance, acid-base balance and part of endocrine are the three major functions of the kidney, and when the kidney is insufficient, it can cause metabolic disorders.

2. Water in food: 700 1000 ml can be produced per day. 3. Drinking water:

1700 ml per day for men and 1500 ml for women. The main ways of discharge are: 1. It is discharged through the kidneys, that is, about 1500 ml of urine.

2. 500 ml is discharged through sweat. 3. Excrete about 350 ml through breathing. 4. It is discharged through the intestine, that is, about 150 ml of feces.

I guess it's two. One is body sweating, which contains a lot of water and sodium chloride. The other is urine, which contains a lot of water and waste products that the body does not need, and is the main way for the body to drain water.

The water in the human body is mainly the water in food and daily drinking. It is mainly excreted through the urethra, and it is also excreted from the body in the form of sweat.

To sum up, the physiological functions of water in the human body mainly include:

1.Digestion: The food we eat daily must be chewed by the teeth and moistened with saliva, through the esophagus to the stomach and intestines, before it can be completely digested and absorbed. Without water, digestion cannot be completed.

2.Excretion of waste: The residual waste left over after digestion and absorption of food must be excreted through sweating, breathing, and urine.

4.Balance body temperature: The relationship between water and body temperature is very close, when the weather is cold, the blood vessels constrict, the amount of blood flow to ** is reduced, and the water is not easy to discharge, so the body temperature can be balanced.

In summer, the blood vessels swell, and the amount of blood flowing to ** increases, at this time, the water also flows to ** through the blood, and then excretes from the surface of the sweat glands. Because the sweat evaporates, the heat on the surface is reduced, and the body temperature can be balanced.

5.Maintain cells: The human body is composed of countless cells, most of which are made up of water, and only water can maintain the metabolism.

6 Lymph and blood: The transport of nutrients, the excretion of waste, and the circulation of waste are all driven by water, which is also needed to maintain the activities of all parts of the human body and the metabolism of every organ.

Therefore, the best thing to do is to drink water at the right time to avoid dehydration. Otherwise, the body will be deprived of water on a regular and continuous basis, and the metabolism will not be able to proceed smoothly, and the body's functions will gradually decline. Medical experts consider the needs of the human body and believe that the average daily intake of liters is appropriate.

The water that the human body needs is obtained first from drinking water, and only then from food. When sufficient water is consumed, the circulation of blood and lymph will be in a good state. In this way, it can ensure the supply of nutrients needed by the body, and can dissolve waste products and eliminate toxins, thereby improving the function of internal organs** and moisturizing and smooth.

This is necessary for the health of young people and young children, and is especially important for the elderly.

Water is absorbed from the stomach, duodenum, small intestine, large intestine, water is lost: respiration, evaporation from the body surface, feces, urine. If you don't drink water, you will die naturally if you lose water.

The stomach can absorb small amounts of water.

The main site of water absorption is in the small intestine.

After absorption, it enters the bloodstream and is transported throughout the body.