OVERVIEW OF THE IMMUNE SYSTEM
PRIMARY AND SECONDARY LYMPHOID ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a lymphoid
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b adenoids
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Either A or B
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None of the above
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Detailed explanation-1: -Adenoids are masses of tissue located high on the posterior wall of the pharynx. They are made up of lymphatic tissue, which trap and destroy pathogens in the air that enter the nasopharynx. Structures of the throat include the esophagus, trachea, epiglottis and tonsils.
Detailed explanation-2: -adenoids, also called pharyngeal tonsils, 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).
Detailed explanation-3: -Tonsils are small, round pieces of tissue located in the back of the mouth on both sides of the throat. The adenoid is a clump of tissue located behind the nasal cavity above the roof of the mouth. Tonsils and adenoids fight infection and can become enlarged when they get infected.