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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 the mouth cavity ).
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.
Heinrich Wilhelm Gottfried von Waldeyer-Hartz (6 October 1836 – 23 January 1921) was a German anatomist, known for summarizing neuron theory [1] and for naming the chromosome. [2] He is also remembered by anatomical structures of the human body which were named after him: Waldeyer's tonsillar ring [ 3 ] (the lymphoid tissue ring of the naso ...
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]
The tonsils in the back of the mouth, the adenoid, and the tonsilar tissue at the base of the tongue combine to form Waldeyer's ring, a tissue ring that helps keep toxins, bacteria, and viruses out of the body. B lymphocytes, a kind of blood cell that produces antibodies, make up the majority of the tissues found in the tonsils and adenoid ...
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In anatomy, the pharyngeal tonsil, also known as the nasopharyngeal tonsil or adenoid, is the superior-most of the tonsils.It is a mass of lymphoid tissue located behind the nasal cavity, in the roof and the posterior wall of the nasopharynx, [1] where the nose blends into the throat.