CPB Certified Professional Biller Certification Practice Exam

What does the prefix "extra-" mean in medical terms?

1. Inside

2. Outside

3. Below

4. Above

The correct answer is: Outside

The prefix "extra-" in medical terminology means "outside" or "beyond." It is derived from Latin, where "extra" signifies something that exists outside of or beyond a particular scope. In a medical context, this prefix is often used to describe conditions or processes that occur outside of a specified area or structure. For example, "extracorporeal" refers to procedures or activities that occur outside the body, such as extracorporeal membrane oxygenation (ECMO). Understanding the meaning of "extra-" helps in interpreting various medical terms accurately, as it provides context regarding location or extent in relation to other anatomical structures or systems. In contrast, meanings like "inside," "below," or "above" are associated with different prefixes—such as "intra-" for inside, "infra-" for below, and "supra-" for above. Thus, recognizing "extra-" as meaning "outside" is crucial for properly grasping the meaning of medical terms that contain this prefix.