CPB Certified Professional Biller Certification Practice Exam

What is the meaning of the prefix "en-" in medical terminology?

1. Above, upon

2. In, within

3. Bad, painful

4. Red

The correct answer is: In, within

In medical terminology, the prefix "en-" typically signifies the meaning of "in" or "within." This prefix is derived from the Latin "in," which conveys a sense of inclusion or internal movement toward something. For example, in terms like "enclose," it indicates that something is placed inside or surrounded by something else. This understanding helps in the interpretation of various medical terms where this prefix is employed, as they usually refer to processes or phenomena occurring within a certain structure or organ. For instance, "endocrine" refers to glands that release hormones within the bloodstream, emphasizing the "internal" aspect of their function. The other options outline prefixes with distinctly different meanings, illustrating that "en-" is specifically suited for the meaning of inclusion or internal orientation in contrast to concepts such as elevation, negativity, or color.