Tonsil

The tonsils are areas of lymphoid tissue on either side of the throat. An infection of the tonsils is called tonsillitis.

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As with other organs of the lymphatic system, the tonsils act as part of the immune system to help protect against infection. In particular, they are believed to be involved in helping fight off pharyngeal and upper respiratory tract infections.

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Tonsils in humans include, from superior to inferior: pharyngeal tonsils (also known as adenoids), tubal tonsils, palatine tonsils, and lingual tonsils. Together this set of lymphatic tissue is called the tonsillar ring or Waldeyer's ring. Tonsils tend to reach their largest size near puberty, and they gradually undergo atrophy thereafter.

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Most commonly, the term "tonsils" refers to the palatine tonsils that can be seen in the back of the throat.

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Lymphoid tissue: REDIRECT Lymphatic system#Lymphoid tissue...

Throat: In anatomy, the throat is the part of the neck anterior to the vertebral column. It consists of the pharynx and larynx....

Infection: :"Infection" is also the title of an episode of the television series Babylon 5...