Suction

Absorption (absorption, resorption) is the process of substances entering the internal environment of the body from the external environment. Absorption occurs through the surface of various tissues and organs - skin, mucous membranes, lungs, etc.

The main sites of absorption of substances in the body:

1. Gastrointestinal tract - absorption of nutrients, water, mineral salts from food.

2. Lungs - absorbs oxygen and releases carbon dioxide during breathing.

3. Skin - absorption of some drugs and substances when applied externally.

4. Mucous membranes - absorption of drugs during inhalation, subcutaneous and intramuscular administration.

The absorption of substances depends on the physicochemical properties of the substance, the area of ​​the absorption surface, the blood supply to tissues and other factors. Impaired absorption processes can lead to the development of various diseases.

Absorption is the absorption of substances through the skin or mucous membrane, particularly the lining of the digestive tract.

The absorption process occurs due to the special structure of the skin and mucous membranes. The cells of these tissues adhere tightly to each other, forming a barrier to the penetration of substances. However, there are areas between the cells where substances can pass into the body.

Absorption plays an important role in the functioning of the digestive system. Nutrients from food, such as proteins, fats, carbohydrates, vitamins, are absorbed through the intestinal wall into the bloodstream and distributed throughout the body. Without this process, food could not be digested.

Suction is also used to administer drugs through the skin or mucous membranes. This allows you to avoid injections and achieve a gradual release of the drug into the blood.

Thus, absorption is an important process that ensures that essential substances enter the body through natural barriers such as the skin and mucous membranes.