MRCP UK EXAMINATIONS

NEUROLOGY

PERIPHERAL NEUROPATHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
C fibers more damaged.Blockage in C fibers, motor fiber will dye and no information = dysautonomia.
A
T
B
F
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Group C fibers include postganglionic fibers in the autonomic nervous system (ANS), and nerve fibers at the dorsal roots (IV fiber). These fibers carry sensory information.

Detailed explanation-2: -C-nerve fibers carry information related to pain, temperature and itch.

Detailed explanation-3: -C-type fibers are unmyelinated fibers that form one of these groups, and they are involved in the afferent transfer of temperature, burning pain, and itch from the periphery to synapse, principally in lamina I and II of the dorsal spinal horn.

Detailed explanation-4: -The unmyelinated C fibers respond to thermal, mechanical, and chemical stimuli and produce the sensation of dull, diffuse, aching, burning, and delayed pain. The myelinated A-delta fibers respond to mechanical (pressure) stimulus and produce the sensation of sharp, localized, fast pain.

There is 1 question to complete.