Anatomy & Histology · single question
Angina pectoris produces a dull, aching chest pain primarily carried by which nerve fiber type?
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Correct answer: A. C fibers
- A. Correct. Anginal pain — dull, pressure-like, poorly localized, radiating — is primarily carried by C FIBERS (unmyelinated, slow conduction). C fibers carry the persistent, deep, burning/aching quality of visceral and cardiac pain.
- B. Incorrect. A-alpha fibers carry proprioception and motor information.
- C. Incorrect. A-beta fibers carry touch/pressure — not visceral pain.
- D. Incorrect. A-delta carries sharp, fast pain — angina is characteristically dull and diffuse, not sharp.
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