INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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What is contained within the medullary sinuses of lymph nodes?

Plasma cells
B cells
Macrophages
T cells

The correct answer is: Macrophages

The medullary sinuses of lymph nodes contain macrophages, which are specialized immune cells that play a crucial role in engulfing and destroying pathogens and other foreign substances. Plasma cells, B cells, and T cells are also present in lymph nodes, but they are mainly found in other areas such as the cortex. Answer choices A, B, and D are all incorrect because they do not accurately describe the main component of the medullary sinuses. It is important to note that while these cells may also play a role in immune responses, they are not primarily found within the medullary sinuses. Therefore, the best answer is C.