Certified Electronic Health Records Specialist (CEHRS) Practice Exam

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What does the medical prefix "sub-" indicate?

  1. In excess of

  2. Under or below

  3. Within

  4. Surrounding

The correct answer is: Under or below

The medical prefix "sub-" indicates "under" or "below." This prefix is derived from Latin, where it denotes a position that is beneath or beneath the norm. In medical terminology, it is commonly used to form words that describe structures or conditions that are situated lower than a certain point or beneath tissue levels. For example, "subcutaneous" refers to the layer of tissue located under the skin, while "subdiaphragmatic" pertains to an area beneath the diaphragm. Understanding medical prefixes like "sub-" is essential for accurately interpreting and communicating medical information. It allows healthcare professionals to describe anatomical positions, conditions, and procedures with precision.