What are the immune organs of the human body

If a person's immunity is too low, it is easy to cause disease problems, so the role of immune organs in the human body cannot be ignored. However, the immune system composed of the human body's immune organs forms a strong barrier for the human body. When problems occur in one of the immune organs, it will affect the overall functioning of the immune system. So which organs in the human body are immune organs?

1. What organs does the immune system include?

The main organs of the human immune system are the bone marrow, thymus, spleen and lymph nodes. These organs produce lymphocytes, which are needed to destroy bacteria, viruses, and tumor cells. The immune system is composed of immune organs.

II. Roles and functions of immune system organs

1. Bone marrow

All of the body's immune system cells are formed in the bone marrow, which is where the bones are found, through a process called hematopoiesis. The hematopoietic process involves the differentiation of bone marrow-derived stem cells into either mature cells of the immune system or into precursor cells that have been removed from the bone marrow and continue to mature. The bone marrow is responsible for producing important immune system cells such as B cells, granulocytes, natural killer cells, and immature thymocytes. In addition, it produces red blood cells and platelets.

2. Thymus

Another site where immune system cells, or lymphocytes, are produced is the thymus gland. This flat double gland is located in the upper chest area, above the heart, and is most active in producing lymphocytes during childhood. The main function of the thymus is to produce mature T cells.

3. Spleen

This organ of the immune system is made up of T cells, B cells, natural killer cells, macrophages, dendritic cells and red blood cells. Its function is to immunofilter the blood and trap impurities. When macrophages and dendritic cells bring antigens to the spleen through the bloodstream, B cells in the spleen are activated and produce large amounts of antibodies.

4. Lymph nodes

Just as the spleen filters blood, these lymph nodes filter the interstitial fluid between the body's cells. Lymph nodes are located in the lymphatic system throughout the body and are mainly composed of B cells, T cells, macrophages and dendritic cells.