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What is white blood cell? What is the function of white blood cells? What is the formula for white blood cells? White blood cells are an important component in the blood and play an essential role in the body. The excess or deficiency of white blood cells are potentially dangerous diseases. In the article below, let’s Tip.edu.vn Learn about the topic of white blood cells and their function.

What is white blood cell?

White blood cells, also known as immune cells or white blood cells (also meaning “white blood cells”) are an important component of blood. White blood cells help the body fight off diseases, especially infectious diseases, as well as foreign bodies appearing in the blood. Therefore, white blood cells play an important role in the immune system, the number of white blood cells of all types in a normal, healthy human body will range from 4×109 to 11×109.

White blood cells exist in a transparent form, have a nucleus and possess a rather large size. Besides, except in blood, white blood cells can also be found in large numbers in lymph nodes or vessels, spleen as well as other tissues located in the human body.

WBC count and white blood cell formula

• According to many scientific studies, the number of white blood cells in the peripheral blood varies from 4.0 to 11.0 G/l (Giga/liter).
  • Male 8.0 ± 2 G/l (x109 cells/liter).
  • Female 8.1 ± 2 G/l (x109 cells/liter).
• Adult white blood cell formula:
  • BC neutral particles: 57.4 ± 8.4%
  • BC granules acidophilic: 3.2 ± 2.6%
  • BC granules basophilic: very rare
  • BC mono : 3.8 ± 0.5%
  • BC lymphocytes : 35 ± 7.2 %
• In general, there was no difference between the white blood cell count of men and women.

What is the function of white blood cells?

The function of white blood cells is clearly demonstrated in each person’s body. Along with that, each type of white blood cell will perform a specific function and specifically it is demonstrated as follows:

Neutrophils

What are neutrophils? Neutrophils are considered as the body’s barrier with the ability to resist pus bacteria. Therefore, the function of this granulocyte is to destroy as well as efficiently and quickly digest many types of bacteria as well as small components. In addition, this type of neutrophils also contains an abundance of strong oxidants that quickly destroy bacteria.

In addition, neutrophils are also the first type of leukocytes capable of reaching the site of invasion in extremely large numbers. Therefore, during phagocytosis of bacteria, many neutrophils, when dead, will quickly form pus at the site of injury. From there, each type of white blood cell will phagocytize with a maximum number of about 5 to 20 bacteria.

Acidophilic granulocytes

What are eosinophils? When learning about the function of the types of eosinophils, you will certainly understand what 1+ leukocytes are. In fact, eosinophils are less active than neutrophils, and with phagocytosis, it is also less active. So, the first function that you can notice in eosinophils is to detoxify foreign proteins through the action of enzymes, especially in the cytoplasm.

Not only that, the function of eosinophils is to attract the site of an allergic reaction and secrete enzymes to counteract the effects of histamine as well as other mediators right in the middle of the reaction. takes place. In addition, eosinophils have the ability to phagocytize antigen-antibody complexes. As a result, it can prevent the inflammatory process from spreading to other sites.

Basophils

What are basophils? This is also a question many people have when learning about white blood cells. The function of leukocytes is also clearly demonstrated with basophilic granulocytes. This type of white blood cell is considered to be quite similar to another type of cell in the tissue outside the capillaries and it is called mast cell.

So what are basophils and what is their function? With their white blood cell formula, basophils have the function of releasing heparin to prevent blood clotting. At the same time, it also helps promote the transport of fat from the blood after a meal you have loaded with energy as well as fat.

Lymphocytes

Along with monocytes, lymphocytes also have an extremely important function. There are three types of lymphocytes in human blood: B cells, T cells and natural killer cells. B cells have the function of producing antibodies that bind to pathogens in order to create conditions for their effective destruction. Along with that, CD4+ T cells have the function of coordinating with the immune system’s responses to increase the body’s resistance.

monocyte

What are monocytes? Monocytes are the largest of the white blood cells. Some monocytes are three times the size of red blood cells. Monocytes are born in the bone marrow and will take about 3 days to grow before being released into the bloodstream.

White blood cells stay in the circulating blood for several days and then migrate to the connective tissues of various organs. There they develop into tissue macrophages such as liver macrophages (called ). Kupffer cells), macrophages in the lungs (called alveolar macrophages), and macrophages of the spleen and bone marrow contribute to the body’s defense against bacteria and harmful chemicals.

Monocytes do not migrate as much as macrophages in loose connective tissues, but all of these macrophages have very strong motility and phagocytosis. In general, compared with neutrophils, macrophages can phagocytize more bacteria and feed on larger particles. Therefore, they will have the effect of cleaning up damaged tissue areas.

In addition, macrophages also play an important role in initiating the production of antibodies by B lymphocytes.

View details >>> What is Monocyte? Meaning of monocyte in blood test

The properties of white blood cells

From the function of white blood cells, you also need to learn more about the properties of white blood cells as follows:

• White blood cells are not only found in the blood or lymph, but also in other tissues, especially in loose connective tissues.
• Leukocytes are motile cells and leukocytes move in an amoeba fashion: Cells release cytoplasmic dendrites that attach to a certain point and then pull the entire cell along. More specifically, neutrophils and monocytes can move in an amoebic manner in tissues at a rate of 40 mm per minute. Leukocytes are also able to pass through the pores of the capillary wall (even though these holes are smaller than the size of leukocytes) by transvascular process to enter the perivascular spaces when needed.
• White blood cells also migrate to damaged or infected tissues because they are attracted to chemicals released by damaged cells or bacteria or by immune complexes produced in the immune response. White blood cells move in response to the attraction of chemicals called chemotaxis.

What is the role of white blood cells?

White blood cells not only have important functions for the body, but they also play an indispensable role in the process of human life. White blood cells help the body maintain life, increase resistance to fight dangerous diseases that can invade.

Not only that, the role of white blood cells is also shown when the body’s health is weakened or there are some diseases related to white blood cells. Therefore, along with learning about the function of white blood cells, you cannot ignore the particularly important role of white blood cells in the development of your own body.

Some questions related to white blood cells

What are eosinophils?

Eosinophils are part of the immune system and an important component of the blood. Eosinophils play an important role for the life of the human body. Some characteristics of eosinophils are as follows:

• Cross-Circuit: Leukocytes can change shape to penetrate the wall between cells to get to where they are needed.
• Move: The eosinophils move with the prosthesis at a rate of about 40 mm/min.
• Chemodynamics and thermodynamics: This is also a distinctive feature of this type of white blood cell.
• Phagocytosis, moisture cells: Mathematical leukocytes are vegetative and moist cells.

What is eosinophilia?

Eosinophilia is thought to be an increase in the number of eosinophils in the peripheral blood. Normally in the human body, eosinophils have a limit of about 0.6 × 10⁹/L (600/microliter), lower (about 0.4 × 10⁹/L). [400/microlit]) except for people with mild allergies. If the number of eosinophils is larger or smaller, there is a good chance that the body has an infection or a disease of any kind.

What are leukocytes?

Urine leukocytes are white blood cells in the urine. Usually urine contains few or no white blood cells. However, if your urine contains a large amount of white blood cells, you may have an infection or health problem, also known as leukocytosis.

What is WBC white blood cell?

• WBC (White Blood Cell) means the number of white blood cells in a volume of blood. In healthy people, the WBC count is usually between 4,300 and 10,800 cells/mm3.
• WBC count has great significance in blood tests. In medicine, when the WBC index increases or decreases, it is a sign to recognize diseases.

What does a high WBC count mean?

WBC index will show blood diseases in the body. A high WBC count indicates a number of diseases such as:

• Acute lymphocytic leukemia.
• Chronic myeloid leukemia.
• Leukemia disease.
• Inflammatory diseases.
• Malignant blood disease

What does a decreased WBC count mean?

When the WBC is low, it shows that the body has an infection, or a deficiency of Vitamin B12 or Folate.

What is Leukemia Infection?

Leukemia indicates infection with Epstein-Barr virus (EBV). This virus is spread through saliva or casual contact. Some symptoms of a white blood cell infection include a high fever, sore throat, or swollen lymph nodes in the neck.

What is leukocyte positive?

• A positive white blood cell count on gynecological examination indicates that the patient has a gynecological infection, usually a gynecological infection caused by bacteria. Usually, the patient has a gynecological infection, the white blood cell will be positive, that is, white blood cells are found in the sample.
• The function of white blood cells is to fight pathogens that attack the body. When the test results have white blood cells (+), it is necessary to pay attention to clean and properly clean the genitals, use the medicine according to the instructions of the specialist doctor.

What are polymorphonuclear leukocytes?

Polymorphonuclear leukocytes are another name for granulocytes. Granulocytes have the lobular feature of the cell nucleus, so they are called. There are 3 types of granulocytes (polymorphonuclear leukocytes):

• Neutrophil.
• Basophils.
• Eosinophilic leukocytes.

What is the symbol for white blood cells?

White blood cells in medicine are denoted as WBC (White Blood Cell).

Learn about the function of white blood cells, you will realize the great value of white blood cells for the body as well as for life. Hopefully, through the above article of Tip.edu.vn, you have had more useful information about the function of white blood cells and from there take good care of your health! If you have any questions related to the topic of white blood cell function, please leave a question for us to help answer.

Read more >>> What is leukocytosis? Causes, Symptoms and Treatment

See more >>> What is red blood cell? Summary of basic information about red blood cells in the blood

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