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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.
[medical citation needed] These small whitish plugs, termed "tonsilloliths" and sometimes known as "tonsil stones," have a foul smell and can contribute to bad breath; furthermore, they can obstruct the normal flow of pus from the crypts, and may irritate the throat (people with tonsil stones may complain of the feeling that something is stuck ...
Other symptoms include a metallic taste, throat closing or tightening, coughing fits, itchy throat, and choking. Larger tonsil stones may cause recurrent bad breath, which frequently accompanies a tonsil infection, sore throat, white debris, a bad taste in the back of the throat, difficulty swallowing, ear ache, and tonsil swelling. [12]
The tonsils are a compact mass that points away from the lumen of the pharynx. In the horse, the auditory tube opens into the guttural pouch and the tonsils are diffuse and raised slightly. Horses are unable to breathe through the mouth as the free apex of the rostral epiglottis lies dorsal to the soft palate in a normal horse.
Illustration comparing normal tonsil anatomy and tonsillitis. Those with tonsillitis usually experience sore throat, painful swallowing, malaise, and fever. [1] [14] [15] Their tonsils – and often the back of the throat – appear red and swollen, and sometimes give off a white discharge.
Normal mucus often looks clear or white for most people, experts say. But mucus changes color, depending on the individual’s environment, in response to various germs and more, he adds.
Lingual tonsils are covered externally by stratified squamous epithelium (nonkeratinized) that invaginates inward forming tonsillar crypts. Beneath the epithelium is a layer of lymphoid nodules containing lymphocytes. Mucous glands located at the root of the tongue are drained through several ducts into the crypts of the lingual tonsils.
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 .