What does the body do with food? Detailed answer

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What does the body do with food? Detailed answer

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What does the body do with food?

This question can be answered that the body "digests" food. But what is it? Our digestive system does two basic things with the food we eat.

First, it breaks down large food molecules so they can be carried around the body. Large molecules cannot penetrate cells and tissues. Starch must be broken down into sugars and proteins into amino acids before they can penetrate cell membranes.

The second task of the digestive system is to convert "foreign" food molecules into body molecules. Do not forget that we absorb a wide variety of food molecules: milk, meat, coffee, potatoes, fish, and so on. By swallowing a piece of chicken, we cannot replace any part of the body with the protein contained in this chicken.

The human body is made up of human protein molecules, which are usually arranged in a specific order. Therefore, the body must decompose the molecules of oil, flour, fish, fruits and other products into elements. Human proteins, fats and starches must be composed of these elements.

The digestion process is very complex. It begins already in the mouth, where saliva decomposes starches. The process then continues in the stomach, where most of this process takes place. Here, gastric juices are mixed with food. Food, already in the form of a liquid, enters the small intestine. Here, the decomposition of proteins is completed, fats are broken down into smaller components and the assimilation of starch ends.

When digested substances spread along the walls of the small intestine, they are absorbed by the blood and lymph. Thus, nutrition reaches all the cells of the body.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What is water?

When scientists try to find life on other planets, they often ask the question: "Is there water there?" As we know, life cannot exist without water.

Water is a tasteless, odorless, colorless liquid that is part of all living beings. It is present in the soil and in the air.

Living organisms consume only the food that is dissolved in water. Living tissues are mainly composed of water. What is in the composition of water? It is a simple combination of two gases: the very light hydrogen gas and the heavier, active oxygen gas.

When hydrogen is burned in oxygen, water is formed. But according to its characteristics, water is not similar to its constituent elements. It has its own properties.

Water has, like many other substances, three basic states: liquid (its usual), solid, called "ice", and gaseous, or "water vapor". The state of water depends on its temperature.

At 0 °C, water changes from liquid to solid, or freezes. At a temperature of 100 °C, water changes from a liquid to a gaseous state. This transition from the visible to the invisible state is called "evaporation".

If you bring a piece of ice into a warm room, it begins to melt. If the room is warm enough, the puddle of water left by the ice will soon disappear. The liquid turned into water vapor. As it cools, water expands in volume.

Water in nature is never pure in the truest sense of the term. It contains dissolved mineral salts, gases, particles of microorganisms.

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