The root word cardio means what?

The root word cardio means what?

• A. Stomach
• B. Heart
• C. Nose
• D. Skull

Answer: (B)

Cardio signals the heart. It comes from the Greek word kardia, and appears in terms like cardiovascular, cardiology, and cardiac, all referring to the heart’s structure or function. That makes it the best fit for what cardio means. The other options point to different parts with their own roots: stomach uses gastro- or gastr-, nose uses nas- or rhin-, and skull uses cranio- or cranial. So cardio specifically ties to the heart, not to any of those other parts.

Cardio signals the heart. It comes from the Greek word kardia, and appears in terms like cardiovascular, cardiology, and cardiac, all referring to the heart’s structure or function. That makes it the best fit for what cardio means. The other options point to different parts with their own roots: stomach uses gastro- or gastr-, nose uses nas- or rhin-, and skull uses cranio- or cranial. So cardio specifically ties to the heart, not to any of those other parts.