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The main function of the white blood cell in the human intestine system is to combat and destroy antigenic particles.
White blood cells or WBCs are the cells protecting the body against foreign invaders and infectious agents. WBCs also known as leukocytes. Unlike red blood cells (RBCs) and platelets, WBCs are nucleated cells. All the WBCs are produced in the bone marrow from stem cells known as hematopoietic stem cells.
White blood cells are divided into three main categories of cells (i) granulocytes (Basophils, Eosinophils, and Neutrophils), (ii) lymphocytes (B cells, T cells, and Natural killer cells), and (iii) monocytes.
WBCs comprise about 1% of the blood in the body. Basophils release histamine and are involved in allergic related reactions. Eosinophils are responsible for the inflammatory response and act against large parasites in the body. Neutrophils are responsible for destroying fungi and bacteria present in the body.
B cells or B-lymphocytes produce antibodies or immunoglobulins. Antibodies are gamma globulins proteins that identify and neutralize foreign antigens such as bacteria and viruses. Each antibody recognizes a specific part or sequence of a pathogen called an antigen. T cells or T-lymphocytes are white blood cells that recognize and kill infected cells of the body. Natural killer cells or NK cells recognize and kill viruses and cancer cells.
Monocytes are the largest type of WBCs. They differentiate into phagocytic cells such as dendritic cells and macrophages. They ingest microbes and foreign particles. Apart from phagocytosis, monocytes act as antigen-presenting cells and present antigen to naive B cells.
