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The immune system plays an important role in maintaining a healthy body free from diseases. This is the main reason why some people with weakened immune systems are more susceptible to health, while others are stable compared to the same disease. To be more precise, this protective mechanism, which decides the fate of tumor cells, bacteria, viruses, parasites and other pathogens, whether they succeed in invading the body or not. As in other organs and systems of the body's immune system consists of groups of cells, tissues and organs that collectively help to protect the host from invading foreign particles and pathogens. Consider an example where pathogens attacking the body organs to determine its first and produce antibodies that are suitable for the destruction of microbes. Therefore, the immune system in response to unwanted pathogens. Let's look at the network of the human immune system. The cells that make up the immune system are white blood cells (leukocytes), also known as leukocytes. Judging from the responses, there are two types of the immune system - innate and acquired. The first category protects the body from infections, generalized or not properly. Cells of the immune system basophils, eosinophils, natural killer cells, mast cells and phagocytes (dendritic cells, macrophages and neutrophils). Unlike the congenital type, acquired or adaptive immune system provides specific, long-term protection of the owner. Cells that are acquired type lymphocytes (B and T lymphocytes). White blood cells are produced and stored in certain tissues and organs of the body. Bodies that are actively involved in generation of lymphocytes called primary lymphoid organs, while others, acting as a place for the immune response is called the secondary lymphoid organs. In addition, higher lymphoid organs help in importing lymphocytes as needed. Commented below the main organs of the immune system:

Thymus: Thymus is present at birth and continues to grow to sexual maturity. This is the primary lymphoid organs, situated between the heart and breastplate. Similar butterflies in the form thymus is the main function of leadership mature thymocytes in T-lymphocytes. T cells play a crucial role to determine the independent cells and foreign particles. Bone marrow: Bone marrow is present in bone, is not really the body and lasix heart is essential for the functioning of the immune system. Thus, it is often seen as the primary lymphoid site. Here, immature thymocytes, B lymphocytes and other cells of the lymphatic encountered. Some of these cells mature in the bone marrow itself, while others are distributed in different parts undergo maturation. Lymph nodes: is bobovidnye structures house lymphocytes, dendritic cells and macrophages. They help with filtering lymph, which is nothing but a liquid spread after discharge from the body tissues. During this process, unwanted particles are destroyed. After filtration of fluid in the lymph nodes come back into the bloodstream. Spleen: Located in the left side of the abdomen, spleen secondary lymphoid organ that contains a large number of T cells. These cells detect the presence of foreign particles, when the blood circulates there over the body. The spleen performs several functions, from filtering the blood to the destruction of unused blood cells. Mucosal lymphoid tissue (MALT): slime of the mucous membrane of respiratory tract, digestive and urinary tracts prone to microbial records. Malt secondary lymphoid organs that contain plasma cells that produce antibodies. Its main function is to protect the microbes penetrate through the mucous membranes. Cutaneous lymphoid tissue (CALT): More tertiary lymphoid organs of the skin. This is the main part of the immune system that acts as a barrier to prevent ingress of particles falling into the host. A large area of ​​skin surface is effective in providing nonspecific protection (birth) on the body of the owner. Speaking of diseases of the immune system, any abnormality of the immune response or reduced or hyperactive can lead to various diseases. In a nutshell, the correct interaction of the immune system, lymphatic system and circulatory system are crucial for effective response to foreign bodies and infections. .