Which root means kidney?

Which root means kidney?

• A. Nas(o)
• B. Neur(o)
• C. Nutria(o)
• D. Nephr(o)

Answer: (D)

Understanding how medical terms are built helps you spot the meaning quickly. The root that means kidney is nephr- (often written as nephr/o or nephro-). It comes from Greek nephros and appears in terms like nephron (the kidney’s functional unit), nephritis (inflammation of the kidney), and nephrology (the study of kidneys). That direct link to kidney is why this root is the correct one for questions asking about the kidney. The other roots point to different parts or ideas: nas- relates to the nose, neur- to nerves, and nutr- (nutri-) to nourishment. So they don’t indicate the kidney.

Understanding how medical terms are built helps you spot the meaning quickly. The root that means kidney is nephr- (often written as nephr/o or nephro-). It comes from Greek nephros and appears in terms like nephron (the kidney’s functional unit), nephritis (inflammation of the kidney), and nephrology (the study of kidneys). That direct link to kidney is why this root is the correct one for questions asking about the kidney.

The other roots point to different parts or ideas: nas- relates to the nose, neur- to nerves, and nutr- (nutri-) to nourishment. So they don’t indicate the kidney.