IMMUNOLOGY

Detailed explanation-1: -Tonsils are small, round pieces of tissue located in the back of the mouth on both sides of the throat. The adenoid is a clump of tissue located behind the nasal cavity above the roof of the mouth. Tonsils and adenoids fight infection and can become enlarged when they get infected.

Detailed explanation-2: -tonsil, small mass of lymphatic tissue located in the wall of the pharynx at the rear of the throat of humans and other mammals. In humans, the term is used to designate any of three sets of tonsils, most commonly the palatine tonsils.

Detailed explanation-3: -Tonsils are lymphoid nodules located along the inner surface of the pharynx and are important in developing immunity to oral pathogens (Figure Figure 18.5. 1). The tonsil located at the back of the throat, the pharyngeal tonsil, is sometimes referred to as the adenoid when swollen.

Detailed explanation-4: -The lymphatic tissues located in the oropharynx are composed of a circumferential tonsillar ring, known as the Waldeyer’s ring which consists of the palatine tonsils (faucial tonsils), adenoid (nasopharyngeal tonsil), lingual tonsil, and tubal tonsils.