(lim-FA-tik SIS-tem)

The tissues and organs that help the body fight infection and disease. The lymphatic system includes the lymph nodes, lymph vessels (thin tubes that carry lymph and white blood cells), bone marrow, spleen, thymus, tonsils and adenoids, and lymph tissue in the small intestine and other parts of the body. The lymphatic system is an important part of the body's immune system. It also plays an important role in maintaining healthy fluid levels in the body, removing cellular debris and harmful substances from the tissues, and helping the body absorb certain fats and other molecules. Also called lymph system.

Figure

The lymph system is part of the body's immune system and is made up of tissues and organs that help protect the body from infection and disease. These include the tonsils, adenoids (not shown), thymus, spleen, bone marrow, lymph vessels, and lymph nodes. (more...)