| 单词 | pharyngeal tonsil |
| 例句 | A pharyngeal tonsil, also called an adenoid, is an aggregate of lymphoid reticular tissue similar to a lymph node that lies at the superior portion of the nasopharynx. Anatomy and Physiology 2013-06-19T00:00:00Z Dirt has been defined as "matter out of place," and the pharyngeal tonsil is an excellent illustration. Preventable Diseases The tonsil located at the back of the throat, the pharyngeal tonsil, is sometimes referred to as the adenoid when swollen. Anatomy and Physiology 2013-06-19T00:00:00Z The function of the pharyngeal tonsil is not well understood, but it contains a rich supply of lymphocytes and is covered with ciliated epithelium that traps and destroys invading pathogens that enter during inhalation. Anatomy and Physiology 2013-06-19T00:00:00Z Similar to the pharyngeal tonsil, the palatine and lingual tonsils are composed of lymphoid tissue, and trap and destroy pathogens entering the body through the oral or nasal cavities. Anatomy and Physiology 2013-06-19T00:00:00Z |
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