INBDE (Integrated National Board Dental Examination) Practice Exam

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Pulpal A fibers are __________ and ______________ when compared to C fibers.

  1. Small and unmyelinated

  2. Large and unmyelinated

  3. Small and myelinated

  4. Large and myelinated

The correct answer is: Large and myelinated

Pulpal A fibers are large and myelinated when compared to C fibers. This is because A fibers are responsible for fast, sharp pain conduction, while C fibers are smaller and unmyelinated, transmitting slower, dull, and diffuse pain signals. Therefore, option D is the correct answer.

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