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Most Latest Central Nervous System ( Physiology ) MCQs – Updated Medical MCQs

Most Latest Central Nervous System ( Physiology ) MCQs – Updated Medical MCQs

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Latest Medical MCQs

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Latest Central Nervous System ( Physiology ) Mcqs

The most occurred mcqs of Central Nervous System ( Physiology ) in past papers. Past papers of Central Nervous System ( Physiology ) Mcqs. Past papers of Central Nervous System ( Physiology ) Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Central Nervous System ( Physiology ) Mcqs. The Important series of Central Nervous System ( Physiology ) Mcqs are given below:

Which of the following is not true about axonotmesis ?

A. Wallerian degeneration
B. Impairment of both sensory and motor function
C. Intact neural sheath is not present
D. Reversible loss, which will be regenerated i 6-8 weeks

Broca’s area is concerned with______________?

A. Word formation
B. Present in posterior part of temporal lobe
C. Comprehends language not speaking
D. Is the confluence of somatic , auditory and visceral areas

DOPA and 5 – Hydroxytryptophan are clinically important because______________?

A. They cross Blood Brain Barriers
B. They act as neuromodulators
C. They are acidic precursors of Brain amines
D. They are metabolites of various neurogentic amines

The pathway of pain from teeth and temperature is carried by ______________?

A. Corticocerebral tract
B. Corticospinal tract
C. Lateral spinothalamic tract
D. Ventral spinothalamic tract

Which of the following acts as a neurotransmitter inhibitor _______________?

A. Aspartic acid
C. Glutamate
D. Lysin

Blood supply to the brain during moderate exercise________________?

A. Increases
B. Remains constant
C. decreases
D. Increases then decreases

Afferent component of corneal reflex is mediated by ________________?

A. Facial nerve
B. Vagus nerve
C. Trigeminal nerve
D. Glossopharyngeal nerve

Following are extrapyramidal tracts except______________?

A. Vestibulospinal
B. Corticospinal
C. Rubrospinal
D. Reticulospinal

The cell junctions allowing exchange of cytoplasmic molecules between two cells are called________________?

A. Gap junctions
B. Anchoring junctions
C. Tight junctions
D. Focal junctions

Sweat glands are supplied by only_______________?

A. Sensory nerves
B. Sympathetic nerves
C. Parasympathetic nerves
D. Motor nerves

Tissues with least regenerative potential is________________?

A. Nerve
B. Cardiac muscle
C. Skin
D. None of the above

Red colour blindness is called________________?

A. Protanomaly
B. Protanopia
C. Deuteranopia
D. Deuteranomaly

Pain producing substance is________________?

A. Histamine
B. Substance P
C. Serotonin
D. Acetyl choline

Phagocytosis in the CNS is done by _______________?

A. Schwann cells
B. Astrocytes
C. Microglia
D. Oligocytes

Function of GABA on CNS is_______________?

A. Neuronal inhibition
B. Glial cell inhibition
C. Neuronal activation
D. Glial cell activation

Hyper kinetic syndromes such as chorea and athetosis are usually associated with pathological changes in_______________?

A. Anterior hypothalamus
B. Motor areas of cerebral cortex
C. Pathways for recurrent collateral inhibition in the spinal cord
D. Basal ganglia complex

In cerebellar disease, all the statements are correct except______________?

A. There is adiodokokinesia
B. The romberg’s sign is positive
C. There is pendular knee jerk
D. There is involuntary termor

Which sensation is not lost on the side of lesion in brown sequard syndrome ?

A. Vibration sense
B. Touch
C. Muscle sense
D. Temperature

First change to occur after nerve cut is_______________?

A. Axonal sprouting
B. Schwan cell mitosis
C. Myelin sheath degeneration
D. Nuclear disintegration

Endocrinology MCQs

Which receptor is responsible for monitoring the rate of muscle stretch ?

A. Nuclear bag intrafusal fibers
B. Golgi tendon organ
C. Nuclear chain
D. Pacinium corpuscles

Body temperature is maintained by ______________?

A. Covering of the body
B. Postural position
C. Peripheral vasoconstriction
D. all of the above

Chromatolysis is______________?

A. Disintegration of golgi apparatus
B. Disintegrating of Nucleus
C. Disappearance of nissel granules
D. Decrease in cell size

In CNS, the myelination is carried out by _____________?

A. Astrocytes
B. Schwann cells
C. Oligodendrocytes
D. Microglia

Breathing ceases upon destruction of the___________________________?

A. Hypothalamus
B. Medulla oblongata
C. Cerebrum
D. Cerebellum

Voluntary movement of eye ball is controlled by______________?

A. Frontal eye field
B. Superior colliculus
C. Cerebellum
D. Visual cortex area

Receptors for olfactory sensation are present in ______________?

A. Nasal septum
B. Lateral walls
C. Lateral wall and nasal septum above superior concha
D. None of the above

Centre of activity of autonomic nervous system is_________________?

A. Cerebrum
B. Midbrain
C. Hypothalamus
D. Pons

Group B fibers are present in_____________?

A. Golgi tendon apparatus
B. Intrafusal fibers of the muscle spindle
C. Autoonomic preganglionic fibers
D. Spinothalamic tracts

The temperature of body is controlled by_______________?

A. Precentral gyrus
B. Medulla
C. Diencephalon
D. Hypothalamus

Middle ear deafness can be tested by_____________?

A. Chvostek test
B. Babinsky test
C. Finger – nose test
D. Weber’s test

Cell bodies of the neurons which carry taste sensation from the anterior 2/3rd of the tongue are located in________________?

A. Otic ganglion
B. Geniculate ganglion
C. Trigeminal nerve ganglion
D. Superior cervical ganglion

Hunger centre of brain is________________?

A. Hypothalamus
B. Frontal lobe
C. Stria nigra
D. Temporal lobe

Pain is conducted by_______________?

A. A-beta fibers
B. A-alpha fibers
C. A-gamma fibers
D. A-delta fibers

Following are the changes during accommodation except_______________?

A. Convergence of eye ball
B. Dilatation of pupil
C. Constriction of pupil
D. Increase in the anterior curvature of lens

Hematology MCQs

Stimulating mechanoreceptors or nociceptors in mouth triggers the_______________?

A. Jaw opening reflex
B. Jaw gnashing reflex
C. Jaw clenching reflex
D. None of the above

In nerve , the magnitude of the action potential overshoot is normally a function of the______________?

A. Intracellular potassium concentration
B. Magnitude of the stimulus
C. extracellular sodium concentration
D. resting membrane potential

Axon hillock is part of the soma of neuron which________________?

A. Is round in shape
B. Has no Nissl granules
C. Is at commencement of dendrites
D. Has dense Nissl grandules

Blood brain barriers is absent in all of the following areas except__________________?

A. Area posterma
B. Habenuclear trigone
C. Subfornical region
D. Neurohypophysis

Epicrritic perception of pain occurs at the level of______________?

A. Pulvinar
B. Area 3,1,2
C. Areas 5,7
D. Thalamus

Intention tremor is a feature of _______________?

A. Loss of function of Hypothalamus
B. Loss of function of Thalamus
C. Loss of function of cerebellum
D. Loss of function of Basal ganglia

The most outer covering of nerve fibres is called as____________?

A. Axolemma
B. Perineurium
C. Neurolemma
D. Myelin sheath

Delta waves of Electroencephalogram have frequency of ______________?

A. Between 8 and 13 cycles per second
B. More than 14 cycles per second
C. Less than 3.5 cycles per second
D. Between 4 and 7 cycles per second

Sensory receptors for pain are_______________?

A. End organs of Ruffini
B. Pacinian corpuscles
C. End bulbs of Krause
D. Free nerve endings

The first physiological response to high environmental temperature is_______________?

A. Decrease heat production
B. Vasodilatation
C. Sweating
D. Non- shivering thermogenesis

function of Merkel’s cells is_______________?

A. Tactile sensation
B. Chemoreceptor
C. Melanophage
D. Proprioception

Copious flow of watery saliva is secreted in response to _____________?

A. Parasympathetic stimulation
B. CNS stimulation
C. Sympathetic stimulation
D. sensory stimulation

Intensity of sound is measured in________________?

A. Daltons
B. Diopters
C. Decibels
D. Pounds

Pacinian corpuscles are major receptor for______________?

A. Pressure
B. Touch
C. Pain
D. Temperature

Resting membrane potential of nerve fiber is_______________?

A. -70 mv
B. -55 mv
C. -90 mv
D. + 35 mv

Sympathetic stimulation causes ______________?

A. Ciliary muscle contraction
B. Arteriolar constriction
C. Sweat secretion
D. All of the above

Gag reflex is mediated by _______ cranial nerve ?

A. X

Satiety center in hypothalamus is regulated by ________________?

A. Blood insulin levels
B. Blood glucose levels
C. Gastric dilatation
D. All of the above

Swallowing center is situated in_______________?

A. Pons
B. MIdbrain
C. Medulla
D. Cerebellum

Wallenberg degeneration is seen in______________?

A. Both the free ends of the cut nerve
B. Distal cut end of nerve without cell body
C. Proximal cut end of nerve with cell body
D. All are true

First change to occur in the distal segment of cut________________?

A. Sprouting
B. Axonal degeneration
C. Mitosis of schwann cell
D. Myelin degeneration

Neurotransmitter in nigrostrial pathway is_______________?

A. Dopamine
B. Acetyl choline
D. Nor epinephrine

The term ‘myopia’ refers to ______________?

A. Near sightedness
B. Constriction of the pupil
C. Far sightedness
D. Dilation of the pupil

Cardiovascular System MCQs

Aphasia is most likely associated with a lesion in_______________?

A. Broca’s area
B. Primary motor area
C. Sensory area
D. Visual area

Abdominal visceral pain is transmitted by ________________?

A. No fibers
B. fibers
C. Parasympathetic fibers
D. Sympathetic fibers

The Sensory receptors serving the stretch reflex are classified as___________?

A. Proprioceptors
B. Exteroceptors
C. Nociceptors
D. Chemo receptors

Unmyelinated fibres differ from myelinated fibers in that they ______________?

A. Have no power of regeneration
B. Have to nodes of Ranvier
C. Have increased excitability
D. Have no association of Schwann cells

Tremors are seen in disorder of_________________?

A. Basal ganglia
B. Pyramidal tract
C. Pain pathway
D. Parathyroid gland

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

A. Impulse through myelinated fibers is slower than non- myelinated fibers
B. Saltatory conduction of impulses is seen
C. Membrane currents are generated at nodes of Ranvier
D. Local anesthesia is effective only when the nerve is not covered by myelin sheath

Lesions within the basal ganglia produce the following signs except_______________?

A. Hypotonia
B. Hemiballismus
C. Tremor
D. Athetosis

Sensations of pain from teeth and temperature are carried by_______________?

A. Corticobulbar tract
B. Corticospinal tract
C. Lateral spinothalamic tract
D. Ventral spinothalamic tract

Preganglionic parasympathetic fibers are_______________?

A. Parasympathetic
B. Somatic only
C. Sympathetic
D. Cholinergic

Respiratory center is situated in_______________?

A. Medulla oblongata
B. Midbrain
C. Spinal cord
D. Hypothalamus

Pain sensation from the lateral extremities is transmitted by________________?

A. Spino thalmamic tract
B. Corticospinal tract
C. Dorsal column
D. Spinocerebellar tract

Pain is conducted by________________?

A. A-beta fibers
B. A-alpha fibers
C. A-gamma fibers
D. A-delta fibers

Most Latest Central Nervous System ( Physiology ) MCQs – Updated Medical MCQs