Prepare for exams with extensive Central Nervous System MCQs, covering anatomy, physiology, and neurological functions.
Central Nervous System MCQs
Sweat glands are supplied by only:
A. Parasympathetic nerves
B. Sympathetic nerves
C. Sensory nerves
D. Motor nerves
Following are extrapyramidal tracts except:
A. Reticulospinal
B. Corticospinal
C. Rubrospinal
D. Vestibulospinal
Afferent component of corneal reflex is mediated by:
A. Vagus nerve
B. Facial nerve
C. Trigeminal nerve
D. Glossopharyngeal nerve
Blood supply to the brain during moderate exercise :
A. decreases
B. Remains constant
C. Increases
D. Increases then decreases
Which of the following acts as a neurotransmitter inhibitor:
A. Glutamate
B. GABA
C. Aspartic acid
D. Lysin
Phagocytosis in the CNS is done by:
A. Astrocytes
B. Schwann cells
C. Microglia
D. Oligocytes
Pain producing substance is:
A. Serotonin
B. Substance P
C. Histamine
D. Acetyl choline
Red colour blindness is called :
A. Deuteranopia
B. Protanopia
C. Protanomaly
D. Deuteranomaly
Tissues with least regenerative potential is:
A. Nerve
B. Skin
C. Cardiac muscle
D. None of the above
The pathway of pain from teeth and temperature is carried by:
A. Corticospinal tract
B. Corticocerebral tract
C. Lateral spinothalamic tract
D. Ventral spinothalamic tract
Pain is conducted by:
A. A-alpha fibers
B. A-beta fibers
C. A-gamma fibers
D. A-delta fibers
Pain sensation from the lateral extremities is transmitted by:
A. Spino thalmamic tract
B. Dorsal column
C. Corticospinal tract
D. Spinocerebellar tract
Respiratory center is situated in :
A. Medulla oblongata
B. Spinal cord
C. Midbrain
D. Hypothalamus
Preganglionic parasympathetic fibers are:
A. Somatic only
B. Parasympathetic
C. Sympathetic
D. Cholinergic
Sensations of pain from teeth and temperature are carried by:
A. Corticospinal tract
B. Corticobulbar tract
C. Lateral spinothalamic tract
D. Ventral spinothalamic tract
Lesions within the basal ganglia produce the following signs except :
A. Hypotonia
B. Tremor
C. Hemiballismus
D. Athetosis
Tremors are seen in disorder of :
A. Basal ganglia
B. Pain pathway
C. Pyramidal tract
D. Parathyroid gland
Unmyelinated fibres differ from myelinated fibers in that they:
A. Have increased excitability
B. Have to nodes of Ranvier
C. Have no power of regeneration
D. Have no association of Schwann cells
The Sensory receptors serving the stretch reflex are classified as :
A. Proprioceptors
B. Nociceptors
C. Exteroceptors
D. Chemo receptors
Abdominal visceral pain is transmitted by:
A. fibers
B. fibers
C. Parasympathetic fibers
D. Sympathetic fibers
Aphasia is most likely associated with a lesion in :
A. Broca’s area
B. Sensory area
C. Primary motor area
D. Visual area
The term ‘myopia’ refers to:
A. Near sightedness
B. Far sightedness
C. Constriction of the pupil
D. Dilation of the pupil
Neurotransmitter in nigrostrial pathway is:
A. Dopamine
B. GABA
C. Acetyl choline
D. Nor epinephrine
First change to occur in the distal segment of cut:
A. Myelin degeneration
B. Axonal degeneration
C. Mitosis of schwann cell
D. Sprouting
Wallenberg degeneration is seen in :
A. Proximal cut end of nerve with cell body
B. Distal cut end of nerve without cell body
C. Both the free ends of the cut nerve
D. All are true
Swallowing center is situated in:
A. MIdbrain
B. Pons
C. Medulla
D. Cerebellum
Satiety center in hypothalamus is regulated by :
A. Gastric dilatation
B. Blood glucose levels
C. Blood insulin levels
D. All of the above
Gag reflex is mediated by ___ cranial nerve ?
A. VII
B. IX
C. X
D. XII
Sympathetic stimulation causes:
A. Arteriolar constriction
B. Ciliary muscle contraction
C. Sweat secretion
D. All of the above
Resting membrane potential of nerve fiber is :
A. -70 mv
B. -90 mv
C. -55 mv
D. + 35 mv
Pacinian corpuscles are major receptor for:
A. Pressure
B. Pain
C. Touch
D. Temperature
Intensity of sound is measured in :
A. Diopters
B. Daltons
C. Decibels
D. Pounds
Copious flow of watery saliva is secreted in response to:
A. Parasympathetic stimulation
B. Sympathetic stimulation
C. CNS stimulation
D. sensory stimulation
function of Merkel’s cells is :
A. Tactile sensation
B. Melanophage
C. Chemoreceptor
D. Proprioception
The first physiological response to high environmental temperature is :
A. Sweating
B. Vasodilatation
C. Decrease heat production
D. Non- shivering thermogenesis
Sensory receptors for pain are:
A. Pacinian corpuscles
B. End organs of Ruffini
C. End bulbs of Krause
D. Free nerve endings
The most outer covering of nerve fibres is called as :
A. Neurolemma
B. Perineurium
C. Axolemma
D. Myelin sheath
Intention tremor is a feature of:
A. Loss of function of Thalamus
B. Loss of function of Hypothalamus
C. Loss of function of cerebellum
D. Loss of function of Basal ganglia
Epicrritic perception of pain occurs at the level of:
A. Thalamus
B. Area 3,1,2
C. Areas 5,7
D. Pulvinar
Blood brain barriers is absent in all of the following areas except :
A. Subfornical region
B. Habenuclear trigone
C. Area posterma
D. Neurohypophysis
Axon hillock is part of the soma of neuron which:
A. Has dense Nissl grandules
B. Has no Nissl granules
C. Is at commencement of dendrites
D. Is round in shape
Stimulating mechanoreceptors or nociceptors in mouth triggers the:
A. Jaw opening reflex
B. Jaw clenching reflex
C. Jaw gnashing reflex
D. None of the above
Following are the changes during accommodation except :
A. Constriction of pupil
B. Dilatation of pupil
C. Convergence of eye ball
D. Increase in the anterior curvature of lens
Pain is conducted by :
A. A-alpha fibers
B. A-beta fibers
C. A-gamma fibers
D. A-delta fibers
Hunger centre of brain is:
A. Hypothalamus
B. Stria nigra
C. Frontal lobe
D. Temporal lobe
Middle ear deafness can be tested by:
A. Babinsky test
B. Chvostek test
C. Finger – nose test
D. Weber’s test
The temperature of body is controlled by:
A. Medulla
B. Precentral gyrus
C. Diencephalon
D. Hypothalamus
Group B fibers are present in _____?
A. Intrafusal fibers of the muscle spindle
B. Golgi tendon apparatus
C. Autoonomic preganglionic fibers
D. Spinothalamic tracts
Centre of activity of autonomic nervous system is :
A. Midbrain
B. Cerebrum
C. Hypothalamus
D. Pons
Voluntary movement of eye ball is controlled by :
A. Superior colliculus
B. Frontal eye field
C. Cerebellum
D. Visual cortex area
Breathing ceases upon destruction of the :
A. Cerebrum
B. Medulla oblongata
C. Hypothalamus
D. Cerebellum
In CNS, the myelination is carried out by :
A. Schwann cells
B. Astrocytes
C. Oligodendrocytes
D. Microglia
Chromatolysis is:
A. Disintegrating of Nucleus
B. Disintegration of golgi apparatus
C. Disappearance of nissel granules
D. Decrease in cell size
Body temperature is maintained by:
A. Postural position
B. Covering of the body
C. Peripheral vasoconstriction
D. all of the above
First change to occur after nerve cut is :
A. Schwan cell mitosis
B. Axonal sprouting
C. Myelin sheath degeneration
D. Nuclear disintegration
In cerebellar disease, all the statements are correct except:
A. The romberg’s sign is positive
B. There is adiodokokinesia
C. There is pendular knee jerk
D. There is involuntary termor
Function of GABA on CNS is :
A. Neuronal inhibition
B. Neuronal activation
C. Glial cell inhibition
D. Glial cell activation
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