Mass of lymphoid tissue, especially one of the paired masses at the back of the mouth (palatine tonsils or lingual tonsils) concerned with response to infection. The adenoids or pharyngeal tonsils are posterior and superior, within the nasopharynx.
A mass of lymphoid tissue on either side of the back of the mouth. It is concerned with protection against infection. The term usually refers to either of the palatine tonsils, but below the tongue is another pair, the lingual tonsils.
Two almond-shaped glands situated one on each side of the narrow fauces where the mouth joins the throat. Each has a structure resembling that of a lymphatic gland, and consists of an elevation of the mucous membrane presenting 12-15 openings, which lead into pits or lacunae. The mucous covering is formed by the ordinary mucous membrane of the mouth, which also lines the pits; and the main substance of the gland is composed of loose connective tissue containing lymph corpuscles in its meshes, and packed here and there into denser nodules or follicles. The tonsils play an important role in the protective mechanism of the body against infection.
A mass of lymphoid tissue in the mucous membranes of the pharynx and base of the tongue. The free surface of each tonsil is covered with stratified squamous epithelium that forms deep indentations, or crypts, extending into the substance of the tonsil. The palatine tonsils, pharyngeal tonsils (adenoids), and lingual tonsils form a ring of immunologically active tissue.
One of the two oval tissue masses situated at the rear of the throat on each side is known as a tonsil. Comprised of lymphoid tissue, these tonsils are integral components of the lymphatic system. Together with the adenoids, they play a role in safeguarding against infections in the upper respiratory tract. The tonsils grow progressively from birth until around the age of seven, after which they experience significant reduction in size. Tonsillitis is a prevalent infection during childhood.
These are two small, oval-shaped, fleshly masses located at the back of the throat on each side. They likely play a role in the immune system by producing antibodies to combat germs and are considered to serve an important function during the early stages of life.
A tiny segment of one of the cerebellum’s hemispheres.