Certified Paraoptometric (CPO) Practice Exam 2025

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What is the meaning of the prefix "Ex-" in medical terms?

Away from, out of
Under, below
Excessive, above, over
Beside, beyond, around

The correct answer is: Away from, out of

The prefix "Ex-" in medical terminology means "away from" or "out of." This prefix is commonly used to indicate a process of movement or removal from a particular place or state. For instance, the term "excision" refers to the act of cutting out or removing tissue, which aligns precisely with the idea of moving away from a specific area or component. This contextual understanding highlights the significance of “Ex-” in various medical terms related to removal or separation. Other prefixes may convey different meanings, but "Ex-" is specifically focused on the concept of movement away from something, making this interpretation accurate in a medical context.