Physiology of Nerve is part of the Nerve Muscle Physiology section of Physiology. Practise 43 exam-style MCQs for NEET PG, FMGE, INI-CET and NEET SS, each with the correct answer and a detailed explanation.
A-delta versus C fibres for burning pain, demyelination in multiple sclerosis, Wallerian degeneration and the refractory period headline these Physiology of Nerve MCQs, which test conduction velocities as high-yield NEET PG material.
Sample Physiology of Nerve MCQs with answers
Sample MCQ #1
Burning pain is carried by which type of fibres ?
AA alpha
BA delta
CA beta
DC
Show Answer & Explanation ▾
✓ Correct Answer: D. C
Ans. D. C Pain is transmitted via two fiber types: * Thinly myelinated A delta fibers (2-5m in diameter) which conduct at rates of 12-30 m/s. * Unmyelinated C fibers (0.4-1.2m in diameter) which conduct at low rates of 0.5-2 m/s. - Thermo receptors also span these two flber types. - Cold receptors are on dendritic endings of A delta fibers and C fibers, whereas warmth (heat) receptors lue on C fibers.
Sample MCQ #2
A Patient with multiple sclerosis having low nerve conduction velocity. What may be the possible cause?
ALoss of oligodendrocyte
BLoss of myelin sheath
CNa + channel block
DDefect in node of Ranvier
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✓ Correct Answer: B. Loss of myelin sheath
Multiple sclerosis is characterized by auto antibody mediated destruction of myelin proteins leading to demyelination and low conduction velocity Reference: Ganong, 25 th edition page no. 94
Sample MCQ #3
A travelling nerve impulse dose not depolarize the area Immediately behind it, because
AIt is hyperpolarized
BIt is refractory
CIt is not self-propagating
DThe condition is always orthodromic
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✓ Correct Answer: B. It is refractory
A travelling nerve impulse dose not depolarize the area immediately behind it, because it is in its refractory period Reference: Ganong, 25 th edition page no. 90
Sample MCQ #4
A patient slept keeping his arm by side, now he developed tingling & numbness sensation over the arm. Which of the following fiber is affected fiber affected?
AC fiber
BAd fiber
CB fiber
DSympathetic fiber
Show Answer & Explanation ▾
✓ Correct Answer: B. Ad fiber
Nerve fibers most susceptible to compression leading to paresthesia are A Group of fibers Reference: Ganong, 25 th edition page no. 94
A-delta versus C fibres for burning pain, demyelination in multiple sclerosis, Wallerian degeneration and the refractory period headline these Physiology of Nerve MCQs, which test conduction velocities as high-yield NEET PG material.
How many Physiology of Nerve questions are there, and which exams do they cover?
MedLadder includes 43 curated MCQs for Physiology of Nerve under Physiology (Nerve Muscle Physiology), covering NEET PG, FMGE, INI-CET and NEET SS preparation.
