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USMLE Exam Prep

Category - Free USMLE Practice Test Questions

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Tuberculosis (Mycobacterium) usually affects which system?

stomach (GI)
heart (cardiac)
lungs (respiratory)
skin (integumestary)

Explanation

Answer: C - Mycobacterium tuberculosis is an aerobic bacillus that requires a great deal of oxygen to grow and flourish. It needs highly oxygenated body sites, such as lungs, growing ends of bones, and brain.

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