Question

Укажіть функцію крові яку виконують лейкоцити

Answer 1

Захисна функція крові

Answer 2

Function of Leukocytes in Blood

Leukocytes, also known as white blood cells, play a crucial role in the immune system and are responsible for defending the body against infections and foreign substances. They are produced in the bone marrow and circulate in the bloodstream and lymphatic system. Leukocytes are involved in various functions, including:

1. Phagocytosis: Leukocytes can engulf and destroy pathogens, such as bacteria, viruses, and fungi, through a process called phagocytosis. They recognize foreign substances and engulf them, neutralizing the threat to the body.

2. Immune response: Leukocytes are an essential part of the immune response. They can identify and respond to antigens, which are molecules present on the surface of pathogens or foreign substances. By recognizing antigens, leukocytes initiate an immune response, which can involve the production of antibodies or the activation of other immune cells.

3. Inflammation: Leukocytes, particularly a type called neutrophils, are involved in the inflammatory response. When tissues are damaged or infected, leukocytes migrate to the affected area and release chemicals that promote inflammation. This response helps to isolate and eliminate the source of infection or injury.

4. Immunological memory: Some types of leukocytes, such as memory B cells and memory T cells, have the ability to "remember" specific pathogens they have encountered before. This immunological memory allows for a faster and more effective immune response upon subsequent exposure to the same pathogen.

5. Regulation of immune response: Leukocytes, including regulatory T cells, help regulate the immune response to prevent excessive inflammation or immune reactions. They play a role in maintaining immune tolerance and preventing autoimmune diseases.

In summary, leukocytes perform various functions in the blood, including phagocytosis, immune response, inflammation, immunological memory, and regulation of the immune response. These functions are essential for maintaining a healthy immune system and protecting the body from infections and diseases.