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Summary Information: Tonsils. Tonsils: The tonsils are structures of the immune system located in the pharynx and throat. The tonsils protect the body from potential infection of invading pathogens into the respiratory system and the digestive system. They possibly play a role in fighting pharyngeal infections and upper respiratory infections.
The tonsils (palatine tonsils) are a pair of soft tissue masses located at the rear of the throat (pharynx). Each tonsil is composed of tissue similar to lymph nodes, covered by pink mucosa (like on the adjacent mouth lining). Running through the mucosa of each tonsil are pits, called crypts.The tonsils are part of the lymphatic system, which helps to fight infections. However, removal of the tonsils does not seem to increase susceptibility to infection. Tonsils vary widely in size and swell in response to infection.unning through the mucosa of each tonsil are pits, called crypts. The tonsils are part of the lymphatic system, which helps to fight infections. However, removal of the tonsils does not seem to increase susceptibility to infection.