Nationally Registered Certified Medical Assistant (NRCMA) (NAHP) Practice Exam

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What is the most common combining form?

  1. a

  2. e

  3. i

  4. o

The correct answer is: o

Combining forms are word parts that can be added to base words to create new words with different meanings. When forming medical terms, the most common combining form is usually derived from Latin or Greek and begins with a vowel. In this case, "o" is the most common combining form because it is found in many medical terms, such as gastro, cardio, and osteo, to name a few. Options A, B, and C are incorrect because while vowels are commonly used as combining forms, they are not the most common. Additionally, there are several other combining forms that begin with these vowels, making them less specific.

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