Medicine MCQs-15

ALL of the following causes stocking neuropathy EXCEPT -

Correct! Wrong!

Excess vitamin B6 can cause nerve damage

Megavitamin-B6 syndrome has been reported in doses as low as -

Correct! Wrong!

Megavitamin-B6 syndrome has been reported in doses as low as 24 mg/day

ALL of the following are CORRECT about Wallerian degeneration EXCEPT -

Correct! Wrong!

Part of the axon distal to the injury (i.e. farther from the neuron's cell body) degenerates


Wallerian degeneration is an active process of degeneration that results when a nerve fiber is cut or crushed and the part of the axon distal to the injury (i.e. farther from the neuron's cell body) degenerates

All of the following are CORRECT for peripheral neuropathy EXCEPT -

Correct! Wrong!

Toes are involved first then Fingers

Inverted champagne bottle appearance seen in -

Correct! Wrong!

Lipodermatosclerosis
Charcot-Marie Tooth Disease

In the CNS, including the spinal cord, myelin sheaths are produced by -

Correct! Wrong!

In the CNS, including the spinal cord, myelin sheaths are produced by oligodendrocytes and not by Schwann cells.

Which of the following nerve fibers first involved in Peripheral Neuropathy?

Correct! Wrong!

Type C

Dysesthesias restricted to the fifth digit and the adjacent one-half of the fourth finger on one hand point to disorder of the -

Correct! Wrong!

Dysesthesias restricted to the fifth digit and the adjacent one-half of the fourth finger on one hand reliably point to disorder of the ulnar nerve, most commonly at the elbow

Which nerve fiber has slowest conduction velocity?

Correct! Wrong!

Type C
C fibers are unmyelinated unlike most other fibers in the nervous system.
This lack of myelination is the cause of their slow conduction velocity

Most common inherited cause of peripheral neuropathy -

Correct! Wrong!

Most common type inherited cause of peripheral neuropathy is Charcot-Marie-Tooth disease
This is one of the hereditary motor and sensory neuropathies.

Most common polyneuropathy is -

Correct! Wrong!

Most common polyneuropathy is diabetic sensorimotor polyneuropathy

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