Anatomy
adenoids
ad·e·noids [ ad-n-oids ]
Subclass of:
Lymphoid Tissue;
Nasopharynx
Definitions related to adenoidal:
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(pharyngeal tonsil) A tonsil in the mucosa of the nasopharynx.CDISC TerminologyClinical Data Interchange Standards Consortium (CDISC), 2021
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(adenoids) A collection of lymphoid nodules on the posterior wall and roof of the NASOPHARYNX.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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(adenoids) Adenoids are a patch of tissue that is high up in the throat, just behind the nose. They, along with the tonsils, are part of the lymphatic system. The lymphatic system clears away infection and keeps body fluids in balance. The adenoids and tonsils work by trapping germs coming in through the mouth and nose. Adenoids usually start to shrink after about age 5. By the teenage years, they are almost completely gone. By then, the body has other ways to fight germs. Enlarged adenoids are adenoids that are swollen. It is a common problem in children. Your child's adenoids can be enlarged, or swollen, for different reasons. It may just be that your child had enlarged adenoids at birth. Adenoids can also become enlarged when they are trying to fight off an infection. They might stay enlarged even after the infection is gone. Enlarged adenoids can make it hard to breathe through the nose. Your child might end up breathing only through the mouth. This may cause A dry mouth, which can also lead to bad breath; Cracked lips; A runny nose. Other problems that enlarged adenoids can cause include Loud breathing; Snoring; Restless sleep; Sleep apnea, where you repeatedly stop breathing for a few seconds while sleeping; Ear infections.MedlinePlusU.S. National Library of Medicine, 2021
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(pharyngeal tonsil) A fold of lymphatic tissue covered by ciliated epithelium at the very back of the nose, in the roof of the nasopharynx.NCI ThesaurusU.S. National Cancer Institute, 2021
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(pharyngeal tonsil) Tonsil, each instance of which is some mass of lymphoid tissue in the roof and posterior wall of some nasopharynx.Foundational Model of AnatomyUniversity of Washington, 2017
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Adenoids, a mass of lymphatic tissue, similar to the (palatine) tonsils, that is attached to the back wall of the nasal pharynx (i.e., the upper part of the throat opening into the nasal cavity proper). An individual fold of such nasopharyngeal lymphatic tissue is called an adenoid. The surface...Encyclopedia Britannica, Inc., 2020
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