________ tonsils are the largest, and their surgical removal (tonsillectomy) used to be one of the most common surgical procedures performed in children.
Adenoid.
Lingual.
Palatine.
Pharyngeal.
The Correct Answer is C
Choice A rationale
Adenoid tonsils, also known as pharyngeal tonsils, are located in the nasopharynx. While they can become enlarged and necessitate removal, they are not typically referred to as the "largest" and their removal is termed adenoidectomy, not tonsillectomy in general.
Choice B rationale
Lingual tonsils are located at the base of the tongue. They are much smaller than palatine tonsils and their removal is less common compared to palatine tonsillectomy. Their anatomical position differs significantly from the most commonly removed tonsils.
Choice C rationale
Palatine tonsils are situated on either side of the oropharynx, between the palatoglossal and palatopharyngeal arches. They are the largest of the tonsils and, due to their size and propensity for recurrent infections, historically were the most common tonsils removed in tonsillectomy procedures.
Choice D rationale
Pharyngeal tonsils, also known as adenoids, are located in the nasopharynx. They are distinct from the palatine tonsils and, while important lymphoid tissues, are not generally considered the largest or the primary target of a "tonsillectomy" in the historical context.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
The pericardial fluid is a serous fluid found within the pericardial cavity, which is the space situated between the visceral pericardium (epicardium), directly adhering to the heart's surface, and the outer parietal pericardium. This fluid acts as a lubricant, reducing friction during cardiac contractions.
Choice B rationale
The myocardium is the thick muscular layer of the heart wall, and the epicardium is the visceral layer of the serous pericardium, directly covering the myocardium. There is no fluid-filled space between these two layers; they are directly continuous.
Choice C rationale
The endocardium is the innermost lining of the heart chambers, and the myocardium is the muscular layer. These layers are directly contiguous, forming the wall of the heart, without any fluid-filled space between them.
Choice D rationale
The heart and lungs are distinct organs within the thoracic cavity. While they are in close proximity, the pericardial fluid is specific to the sac surrounding the heart, not a general fluid space between the heart and the lungs.
Correct Answer is D
Explanation
Choice A rationale
Innate immunity is the body's first line of defense, providing immediate, non-specific protection without prior exposure. Cytotoxicity refers to the ability of certain immune cells, like natural killer cells, to kill target cells, but it is not a distinct form of immunity that "remembers" pathogens.
Choice B rationale
Adaptive immunity is characterized by its specificity and immunological memory, meaning it learns and remembers specific pathogens. Innate immunity, however, does not possess memory; its responses are always the same regardless of previous exposure.
Choice C rationale
A natural killer cell is a component of innate immunity, providing non-specific cytotoxicity against infected or cancerous cells without prior sensitization. A macrophage is a phagocytic cell involved in both innate and adaptive immunity, but neither specifically represents the "memory" aspect of adaptive immunity in this context.
Choice D rationale
Innate immunity provides immediate, non-specific defense mechanisms against pathogens, but it lacks immunological memory, meaning it responds identically to repeated exposures. In contrast, adaptive immunity, also known as acquired immunity, develops memory cells that allow for a faster, stronger, and more specific response upon subsequent encounters with the same pathogen.
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