Which type of nerve fibers transmits pain impulses?
A)A-alpha (Aa) fibers
B)A-beta (Ab) fibers
C)A-delta (Ad) fibers
D)B fibers

Question

Quizplus · Accepted Answer

Of the available options, only medium-sized Ad fibers transmit pain impulses. A-beta (Ab) fibers are large myelinated fibers that transmit touch and vibration sensations. They do not normally transmit pain but play a role in pain modulation. A-alpha (Aa) fibers and B fibers do not play any role in pain.

Which Type of Nerve Fibers Transmits Pain Impulses