Nationally Registered Certified Medical Assistant (NRCMA) (NAHP) 2025 – 400 Free Practice Questions to Pass the Exam

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What does 'nephron' refer to?

Heart

Brain

Liver

Kidney

The nephron is a functional unit of the kidney responsible for filtering blood and producing urine. Option A, B, and C are all organs that have different functions and do not directly relate to nephrons. The kidney is responsible for regulating water and electrolyte balance, filtering waste products, and producing hormones. Therefore, the correct answer is D, Kidney.

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