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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Gerlach tonsil in Waldayer&;s ring is
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The correct answer is  A collection of lymphoid tissue is present in the nasopharynx, behind the tubal opening. It is called the tubal tonsil, also known as Gerlach's tonsil. It is continuous with the lateral pa of the pharyngeal tonsil. In Waldeyer's lymphatic ring, the most impoant aggregations are the right and left palatine tonsils. Posteriorly and above there is the pharyngeal tonsil; laterally and above there are the tubal tonsils, and inferiorly there is the lingual tonsil over the posterior pa of the dorsum of the tongue. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 4th edition.