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BIO NMDCAT Receptors
nmdcat.online July 7, 2026

Regarding pain reception, the sensation of fast, sharp, and highly localized pain is transmitted to the CNS by

A. Unmyelinated C fibers
B. Myelinated A-delta fibers
✓
C. A-beta fibers
D. B fibers

📝 Explanation

Fast, sharp pain (like a needle prick) is transmitted rapidly by myelinated A-delta fibers. Slow, dull, aching pain is transmitted by unmyelinated C fibers.

📖 Additional Information

  • Unmyelinated C fibers
  • Myelinated A-delta fibers
  • A-beta fibers
  • B fibers

Fast, sharp pain (like a needle prick) is transmitted rapidly by myelinated A-delta fibers. Slow, dull, aching pain is transmitted by unmyelinated C fibers.

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