NEET PG Medical – 2019 – Question – 28
Slow conduction velocity is seen with which of the following nerve fibers?
a) Preganglionic autonomic nerve fibers
b) Postganglionic autonomic nerve fibers
c) Motor nerves
d) Sympathetic nerve fibers
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Correct Answer – B
Ans: B. Postganglionic autonomic nerve fibers
Erlanger & Gasser classification:
C fiber – Characteristics:
- Diameter – 0.2-1.0
- Myelination – Unmyelinated
- Conduction – 0.2-2 (minimum)
Functions:
- Pain – Slow pain (“Protopathic /Second pain)
- Temperature
- Pressure
- Postganglionic autonomic fibers.
- High susceptibility to: Local anesthetics
