Physiology MCQs

Page No. 6

Lesions within the basal ganglia produce the following signs except_______________?


aHypotonia


bTremor


cHemiballismus


dAthetosis


View Answer Hypotonia

Which of the following is not true for myelinated nerve fibers______________?


aImpulse through myelinated fibers is slower than non- myelinated fibers


bMembrane currents are generated at nodes of Ranvier


cSaltatory conduction of impulses is seen


dLocal anesthesia is effective only when the nerve is not covered by myelin sheath



Tremors are seen in disorder of_________________?


aBasal ganglia


bPain pathway


cPyramidal tract


dParathyroid gland


View Answer Basal ganglia

Unmyelinated fibres differ from myelinated fibers in that they ______________?


aHave increased excitability


bHave to nodes of Ranvier


cHave no power of regeneration


dHave no association of Schwann cells



The Sensory receptors serving the stretch reflex are classified as___________?


aProprioceptors


bNociceptors


cExteroceptors


dChemo receptors


View Answer Proprioceptors

Abdominal visceral pain is transmitted by ________________?


afibers


bfibers


cParasympathetic fibers


dSympathetic fibers


View Answer Sympathetic fibers

Aphasia is most likely associated with a lesion in_______________?


aBroca’s area


bSensory area


cPrimary motor area


dVisual area


View Answer Broca’s area

The term ‘myopia’ refers to ______________?


aNear sightedness


bFar sightedness


cConstriction of the pupil


dDilation of the pupil


View Answer Near sightedness

Neurotransmitter in nigrostrial pathway is_______________?


aDopamine


bGABA


cAcetyl choline


dNor epinephrine


View Answer Dopamine

First change to occur in the distal segment of cut________________?


aMyelin degeneration


bAxonal degeneration


cMitosis of schwann cell


dSprouting


View Answer Axonal degeneration

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