The Pitt Medical Terminology Practice Test

Which combining form means heart?

Liver Nerve Cardi/o Kidney

Correct Answer:

Cardi/o

Explanation:

Combining forms are building blocks that name body parts in medical terms. For the heart, the form is cardi/o, which you’ll see in terms like cardiology, cardiovascular, and cardiogram. The other options point to different organs: hepat/o for liver, neur/o for nerve, and nephr/o (or ren/o) for kidney. So, cardi/o is the correct form because it specifically designates the heart when forming medical terms.

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