You are teaching an anatomy class to prenursing students. Today you are discussing the upper respiratory system. Which structures are important links in the chain of lymph nodes guarding the body from invading organisms?
(Mark all that apply.)
A) Adenoids
B) Sinuses
C) Other lymphoid tissue
D) Tonsils
E) Paranasal sinuses
Ans: A, C, D
Feedback: The adenoids, or pharyngeal tonsils, are located in the roof of the nasopharynx. The tonsils, the adenoids, and other lymphoid tissue encircle the throat. These structures are important links in the chain of lymph nodes guarding the body from invasion by organisms entering the nose and the throat. The sinuses and paranasal sinuses are not lymph tissue.
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