A delta (A$\delta$) fibers can rapidly transmit pain information to the brain because
A) they have the shortest axons.
B) they are unmyelinated.
C) they have large-diameter axons.
D) they have small-diameter axons.

Question

Quizplus · Accepted Answer

Delta fibers have large-diameter axons, which allows for rapid conduction of pain information to the brain. Myelination can also increase conduction speed, but delta fibers are unmyelinated. Axon length does not impact conduction speed in the same way as axon diameter. Small-diameter axons are typically associated with slower conduction speeds.

A Delta (A δ\deltaδ ) Fibers Can Rapidly Transmit Pain Information to the Brain

A Delta (A $\delta$ ) Fibers Can Rapidly Transmit Pain Information to the Brain