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ADA NBDHE Dental Hygienist

Category - Provision of Clinical Dental Hygiene Services

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What nerve fiber is first affected by anesthetics?

Bundled nerve
C-fibers
A-fibers
F-fibers

Explanation

Answer: B - C-fibers are the first nerve fiber affected by anesthetics. These fibers are nonmyelinated. Although the C-fiber is the first to be affected by anesthetics, they are the last to regain sensation.

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