Physiology & Biochemistry · single question
Which nerve fibers carry this dull, aching pain?
Dull chest pain radiating to the arm (referred cardiac/anginal-type pain).
Show answer and explanation
Correct answer: A. C fibers
Dull, aching, second pain = unmyelinated C fibers.
- A. Correct. Slow, dull, aching, poorly localized pain is carried by unmyelinated C fibers.
- B. A-delta carry sharp, fast, well-localized 'first' pain — not the dull aching type.
Practice Physiology & Biochemistry questions Physiology & Biochemistry study notes