Which root means kidney?

Which root means kidney?

• A. Ren
• B. Nephro
• C. Uro
• D. Corti

Answer: (A)

In medical word parts, the organ involved is signaled by the root. For kidney, there are two common roots: ren- from Latin and nephro- from Greek. Ren- is the direct root you encounter in terms like renal or reniform, forming the everyday kidney-related words. That makes it the best pick here because it clearly names the kidney as the base meaning. Nephro- also means kidney and appears in words like nephrology and nephron, but it’s typically used as a combining form that attaches to other morphemes rather than serving as the standalone root in simple kidney terms. Uro- refers to urine or the urinary tract, not the kidney itself, and Corti- relates to the cortex.

In medical word parts, the organ involved is signaled by the root. For kidney, there are two common roots: ren- from Latin and nephro- from Greek. Ren- is the direct root you encounter in terms like renal or reniform, forming the everyday kidney-related words. That makes it the best pick here because it clearly names the kidney as the base meaning. Nephro- also means kidney and appears in words like nephrology and nephron, but it’s typically used as a combining form that attaches to other morphemes rather than serving as the standalone root in simple kidney terms. Uro- refers to urine or the urinary tract, not the kidney itself, and Corti- relates to the cortex.