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  2. Palatine tonsil - Wikipedia

    en.wikipedia.org/wiki/Palatine_tonsil

    The palatine tonsils are located in the isthmus of the fauces, between the palatoglossal arch and the palatopharyngeal arch of the soft palate.. The palatine tonsil is one of the mucosa-associated lymphoid tissues (MALT), located at the entrance to the upper respiratory and gastrointestinal tracts to protect the body from the entry of exogenous material through mucosal sites.

  3. Tonsil - Wikipedia

    en.wikipedia.org/wiki/Tonsil

    The tonsils are a set of lymphoid organs facing into the aerodigestive tract, which is known as Waldeyer's tonsillar ring and consists of the adenoid tonsil (or pharyngeal tonsil), two tubal tonsils, two palatine tonsils, and the lingual tonsils. These organs play an important role in the immune system. When used unqualified, the term most ...

  4. Tonsillar crypts - Wikipedia

    en.wikipedia.org/wiki/Tonsillar_crypts

    Tonsillar crypts. Tonsillar crypts. Low-power microscope magnification of a cross-section through one of the tonsillar crypts (running diagonally) as it opens onto the surface of the throat (at the top). Stratified epithelium (e) covers the throat's surface and continues as a lining of the crypt. Beneath the surface are numerous nodules (f) of ...

  5. Lingual tonsils - Wikipedia

    en.wikipedia.org/wiki/Lingual_tonsils

    The lingual tonsils are a collection of lymphatic tissue located in the lamina propria of the root of the tongue. [1] This lymphatic tissue consists of the lymphatic nodules rich in cells of the immune system (immunocytes). [2] The immunocytes initiate the immune response when the lingual tonsils get in contact with invading microorganisms ...

  6. Fauces (throat) - Wikipedia

    en.wikipedia.org/wiki/Fauces_(throat)

    Fauces (throat) A view of the fauces through the mouth cavity. The cheeks have been slit transversely and the tongue pulled forward. (Fauces labelled as Isthmus faucium at center right.) The fauces, isthmus of fauces, or the oropharyngeal isthmus is the opening at the back of the mouth into the throat. [1] It is a narrow passage between the ...

  7. Palatine bone - Wikipedia

    en.wikipedia.org/wiki/Palatine_bone

    The palatine bones are situated at the back of the nasal cavity between the maxilla and the pterygoid process of the sphenoid bone. They contribute to the walls of three cavities: the floor and lateral walls of the nasal cavity, the roof of the mouth, and the floor of the orbits. They help to form the pterygopalatine and pterygoid fossae, and ...

  8. Waldeyer's tonsillar ring - Wikipedia

    en.wikipedia.org/wiki/Waldeyer's_tonsillar_ring

    Waldeyer ring labeled at center top. Waldeyer's tonsillar ring (pharyngeal lymphoid ring, Waldeyer's lymphatic ring, or tonsillar ring) is a ringed arrangement of lymphoid organs in the pharynx. Waldeyer's ring surrounds the naso- and oropharynx, with some of its tonsillar tissue located above and some below the soft palate (and to the back of ...

  9. Tubal tonsil - Wikipedia

    en.wikipedia.org/wiki/Tubal_tonsil

    Structure. Each tubal tonsil is located posterior to the opening of the Eustachian tube on the lateral wall of the nasopharynx. [1] It is one of the four main tonsil groups forming Waldeyer's tonsillar ring. [2] This ring also includes the palatine tonsils, the lingual tonsils, and the adenoid. [2]