What are lymph glands?
Small lymph glands (sometimes called lymph nodes) occur throughout the body. Lymph glands that are near each other often form into groups or chains. Examples of where lymph glands group together are: the sides of the neck, the armpits, and the groins. The diagram shows the main groups of lymph glands in the head and neck. But, lymph glands occur in many places in the body.
Lymph glands are joined together by a network of lymph channels. Lymph is a fluid that forms between the cells of the body. This watery fluid travels in the lymph channels, through various lymph glands and eventually drains into the bloodstream.
Lymph and lymph glands are major parts of the immune system. They contain white blood cells (lymphocytes) and antibodies that defend the body against infection.
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