![]() ![]() However, a person should seek medical advice if: Most people who have swollen glands with a cold or flu do not need to contact a doctor. In this, infection causes inflammation in the lymph nodes, and a person will require antibiotic treatment. In the former, the lymph nodes react when coming into contact with foreign materials from infected tissue.ĭirect infection can cause lymphadenitis. Lymph nodes can swell for two common reasons: a reaction to an infection and direct infection of the lymph nodes. Bone marrow: Bone marrow is not lymphatic tissue but is part of the lymphatic system because it is here that the B cell lymphocytes of the immune system mature.īelow is a 3D model of the lymphatic system, which is fully interactive.It produces white blood cells and filters the blood to remove microbes as well as old and damaged red blood cells and platelets. Spleen: The spleen is not part of the connected lymphatic system, but it is lymphoid tissue.They can help protect against inhaled and swallowed foreign bodies. Tonsils: The tonsils produce lymphocytes and antibodies.It secretes hormones and is crucial to the production, maturation, and differentiation of immune T cells. Thymus gland: The thymus gland is a lymphatic organ and an endocrine gland behind the sternum.The tonsils, spleen, and thymus glands are also lymphatic tissues. Lymph nodes are not the only lymphatic tissues in the body. The thoracic duct returns filtered lymph into the bloodstream. Once this fluid passes out of the lymph nodes, it travels to larger vessels and eventually lymph ducts, which converge in the thoracic duct at the base of the neck. These nodes filter out damaged cells, bacteria, and other foreign bodies. Lymphatic vessels collect interstitial fluid and transport it to lymph nodes. The lymphatic system consists of lymph vessels, ducts, nodes, and other tissues throughout the body. Share on Pinterest This shows the lymphatic system. Learn more about antibodies and their role in the body here. These are highly specific and long lasting responses to particular pathogens. The lymphatic system and the action of lymphocytes form part of the body’s adaptive immune response. They can also produce antibodies from memory if they have already encountered the specific pathogen in the past. They both travel through the lymphatic system.Īs they reach the lymph nodes, they come into contact with viruses, bacteria, and foreign particles in the lymph fluid.įollowing contact, lymphocytes form antibodies and start to defend the body. There are two types of lymphocytes: T cells and B cells. The lymphatic system produces white blood cells called lymphocytes. How does the lymphatic system fight infection? Learn more about how the immune system works here. In this case, the lymphatic system enables the immune system to respond appropriately. However, pathogens often do succeed in entering the body despite these defenses. ![]()
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