(b) The vagus nerve (cranial nerve X) is the longest cranial nerve, extending from the brainstem to the abdomen.
2. Number of cranial nerve in rabbit:
[IOM 2012]
9
10
11
12
(d) Rabbits, like most mammals, have 12 pairs of cranial nerves.
3. The lobe of brain where visual stimuli are received and analyzed
[MOE 2069]
Frontal
Temporal
Parietal
Occipital
(d) The occipital lobe contains the primary visual cortex.
4. Neurons that carry messages from receptors area to CNS are called:
[IE 2013]
Intermediate
Motor
Relay
Sensory
(d) Sensory neurons transmit sensory information from receptors to the CNS.
5. What is the name of the gap between the end of one neuron and another?
[IE 2013]
Axon
Dendrite
Fatty sheath
Synapse
(d) The synapse is the junction between two neurons where neurotransmitters are released.
6. The muscular co-ordination of mammals is controlled
[MOE-2011, IOM-2008, MOE-2003]
Cerebrum
Cerebellum
Pons
Medulla oblongata
(b) The cerebellum is responsible for motor coordination and balance.
7. Center of intelligence in brain lies in the
[MOE 2010]
Diencephalon
Cerebellum
Medulla oblongata
Cerebrum
(d) Higher cognitive functions are primarily located in the cerebrum.
8. Vagus nerve is a part of
[MOE 2010]
Central nervous system
Sympathetic nervous system
Parasympathetic nervous system
Spinal nervous system
(c) The vagus nerve is a major component of the parasympathetic nervous system.
9. Reflex action is exhibited by..
[IOM-2010]
Brain
spinal cord
ANS
PNS
(b) Simple reflex actions are mediated by the spinal cord without brain involvement.
10. Body posture is maintained by…
[BP- 2010]
Cerebrum
Cerebellum
Medulla
Spinal cord
(b) The cerebellum coordinates voluntary movements and maintains posture.
11. Which of the following human parasympathetic functions is not under the control of a cranial nerve?
[IE - 2009]
Constriction of the pupil
Contraction of urinary bladder
Increase of salivation
Stimulation of gall bladder activity
(b) Bladder contraction is controlled by sacral spinal nerves, not cranial nerves.
12. Sodium - pump in human body is related to:
[MOE 2009]
Transport of CO2
Nerve impulse conduction
Dissociation of Hemoglobin
Exchange of gases
(b) The sodium-potassium pump maintains resting membrane potential in neurons.
13. The longest cranial nerve in rabbit is
[MOE-2008]
Oculomotor
Auditory
Trochlear
Vagus
(d) The vagus nerve is the longest cranial nerve in mammals.
14. Thermoregulatory centre is found in:
[IOM 1999, 2009]
Diencephalon
Cerebellum
Hypothalamus
Occipital lobe
(c) The hypothalamus contains the body's thermoregulatory center.
15. Which nerve supply is for single muscle?
[IOM-2007]
Optic
Oculomotor
Trochlear
Vestibulocochlear
(c) The trochlear nerve (CN IV) innervates only the superior oblique muscle.
16. The resting potential of the membrane of a nerve fibre.
[MOE-2062]
60 to 70 mv
-100 to -110 mv
50 to 100 mv
-20 to 30 mv
(a) The resting membrane potential is typically -70mV in neurons.
17. Which centre is stimulated during increase in body temperature?
[KU 2012]
Anterior hypothalamus
Limbic system
Posterior hypothalamus
Red nucleus
(a) The anterior hypothalamus contains heat-sensitive neurons.
18. The cerebral hemisphere are joined with midbrain by:
Foramen of monro
Foramen of magendie
Foramen of luschka
Crura cerebri
(d) The cerebral peduncles (crura cerebri) connect cerebrum to midbrain.
19. Number of cranial nerves in human is
[KUMET-2008]
12
12 pairs
31 pairs
9 pairs
(b) Humans have 12 pairs of cranial nerves.
20. Parasympathetic nervous system
[KUMET-2006]
Accelerates heart beat
Increases sweat secretion
Causes contraction of urinary bladder
Increases heart rate
(c) The parasympathetic system stimulates bladder contraction (rest-and-digest functions).
21. Which layer of meninges forms the innermost portion?
[KUMET-2003]
Pia mater
Arachnoid mater
Dura mater
Grey matter
(a) The pia mater is the delicate innermost meningeal layer.
22. Which of the following structure, in the evolution of vertebrate brain has shown greatest size increase relative to rest of the brain?
[IE - 2007]
Fore brain
Mid brain
Hind brain
Rhombencephalon
(a) The forebrain (especially cerebrum) shows greatest evolutionary expansion.
23. Parkinson's disease affects:
[BP 2007]
Brain
Lungs
Muscle
Kidney
(a) Parkinson's is a neurodegenerative disorder affecting the brain.
24. The innermost layer of cranial meninges is:
[BP 2006]
Dura mater
Pia mater
Arachnoid mater
Myelin sheath
(b) Pia mater is the innermost meningeal layer adhering to the brain surface.
25. Breathing centre occurs in
[IE - 2006]
Hypothalamus
Thalamus
Medulla oblongata
Cerebellum
(c) The medullary respiratory centers control breathing.
26. Which is present in Diencephalon?
[IE - 2006]
Cerebral cortex
Hypothalamus
Olfactory lobes
Basal ganglia
(b) The hypothalamus is part of the diencephalon.
27. Sleep inducing drugs are called ...
[IOM-2005]
Hypnotic
Tranquilizers
Sedative
Emetics
(a) Hypnotics are drugs that induce sleep.
28. Olfactory lobe is site for:
[MOE-2005]
smell
taste
Vision
sound
(a) The olfactory bulbs process smell sensations.
29. The cerebellum is concerned with:
[BP 2005]
Perception
Co-ordination of muscular movement
Memory
Vision
(b) The cerebellum coordinates voluntary movements and maintains posture.
30. A ganglion of sensory neurons occurs in:
[BP 2004]
Dorsal horn of spinal cord
Ventral root of spinal nerve
Dorsal root of spinal nerve
Dermis of skin
(c) Sensory ganglia are located in dorsal roots of spinal nerves.
31. Which cranial nerve in man is both sensory and motor?
[BP 2004]
Optic
Olfactory
Trigeminal
Auditory
(c) The trigeminal nerve (CN V) has both sensory and motor functions.
32. Hind brain of frog consists of
[IOM-2004]
Optic lobe
MO & cerebellum
Optic lobes & MO
Diencephalon & MO
(b) The frog's hindbrain consists of medulla oblongata and cerebellum.
33. In which of the following disorder a patient commonly commits suicide?
[IOM-2004]
only commits suicide?
Obsession
Depression
Schizophrenia
(c) Depression is strongly associated with suicidal ideation.
34. Two cerebral hemispheres of mammalian brain are connected via..
[PE-2004]
Corpus callosum
Anterior commissure
Posterior commissure
3rd ventricle
(a) The corpus callosum is the largest commissure connecting hemispheres.
35. Palpitation that may be felt while facing an interview primary due to the activation of
[IOM -2004]
Central nervous system
Peripheral nervous system
Sympathetic nervous system
Parasympathetic nervous system
(c) The sympathetic system produces the 'fight-or-flight' response.
36. The muscle co-ordination is done by
[MOE-2003]
Cerebrum
Cerebellum
Pons
Medulla oblongata
(b) The cerebellum coordinates voluntary muscle movements.
37. Which of the followings is found in diencephalons?
[IE - 2002]
Hypothalamus
Basal ganglia
Celebral cortex
Olfactory lobes
(a) The hypothalamus is part of the diencephalon.
38. Primary visual cortex is present in..
[IOM-2001]
frontal lobe
parietal lobe
temporal lobe
occipital lobe
(d) The primary visual cortex is located in the occipital lobe.
39. Hunger and thirst are under direct control of:
[BP 2001]
Cerebrum
Cerebellum
Hypothalamus
Epithalamus
(c) The hypothalamus regulates basic drives including hunger and thirst.
40. Which part is responsible for attention?
[KUMET-2001]
cerebellum
Cerebral cortex
Medulla
Midbrain
(b) Attention processes primarily involve the cerebral cortex.
41. The parasympathetic nervous system:
[BP 2001]
has epinephrine as neurotransmitters
has ganglions near the organ
accelerates most of the peripheral organs
all of the above
(b) Parasympathetic ganglia are located near target organs.
42. CNS consists of :
[MOE-2000]
Brain only
Spinal cord only
Brain and spinal cord both
Brain and ANS
(c) The central nervous system includes the brain and spinal cord.
43. Which of the following do not belong together?
[MOE-2058]
Forebrain- cerebral hemisphere
Hindbrain- medulla
Diencephalon-hypothalamus
Midbrain-cerebellum
(d) The cerebellum is part of the hindbrain, not midbrain.
44. Reasoning power is maximum in human due to the development of:
[BP 2000]
Cerebellum
Medulla
Cerebral cortex
Cerebrum
(c) Higher reasoning occurs in the cerebral cortex.
45. Reflex action in vertebrates is exhibited by....
[KUMET-2000]
Sensory nerves
Motor nerves
Sympathetic nerves
Autonomic response
(a) Reflex arcs begin with sensory nerve input.
46. Gland of Swammerdam is reserve of ..
[KUMET-2000]
Fats
Proteins
Carbohydrates
Minerals
(a) The gland of Swammerdam stores fat in some insects.
47. Sodium potassium pump or Na+-K+ ATPase acts on the principle of
[IOM-1996]
Simple diffusion
Facilitated diffusion
Active transport
Osmosis
(c) The sodium-potassium pump requires ATP (active transport).
48. In brain there is no
[IOM 1994]
Glucose
Protein
Amino acids
Insulin
(d) The brain doesn't produce insulin (pancreatic hormone).
49. Impulses are transmitted along cell membranes due to change in
[IOM 1993]
Potential difference across the membrane
Resistance
Fluid volume
Plasma concentration
(a) Nerve impulses involve changes in membrane potential.
50. Cerebrospinal fluid
[IOM -1993]
Afloats the brain
Is blood filtrate
Acts as a shock absorber
All of the above
(d) CSF has all these functions: buoyancy, filtration, and protection.
51. Synapse is a gap between adjacent
[MOE 2014,2013]
Muscle fibre
Menopause
Nerve cell and any other cell
Nerve cells
(d) Synapses occur between neurons (nerve cells).
52. The nerve that transmits impulse towards CNS is
[MOE 2014]
Abducens
Auditory
Occulomotor
Ventral root of spinal cord
(b) The auditory nerve carries sensory information to the CNS.
53. Hypothalamus of human brain is meant for
[MOE 2013]
Body orientation
Homeostatic control
Muscular co-ordination
Smell control
(b) The hypothalamus maintains homeostasis (e.g., temperature, hunger).
54. Crura cerebri are the nerve bands of:
[MOE 2012]
Cerebellum
Optic lobes
Cerebrum
Hypothalamus
(c) The cerebral peduncles (crura cerebri) connect cerebrum to brainstem.
55. The lobe of brain where visual stimuli are received and analysed:
[MOE 2012]
Frontal
Temporal
Parietal
Occipital
(d) The occipital lobe contains the visual cortex.
56. In action potential during nerve impulse transmission, the repolarisation is due to the entry of
[IOM 2014]
Ca
K
Na
Me
(b) Potassium (K+) efflux causes repolarization.
57. Injury in occipital lobe causes loss of
[IOM 2016]
Vision
Speech
Memory
Hearing
(a) The occipital lobe processes visual information.
58. Neurotransmitter released from postganglionic sympathetic innervated sweat gland is
[IOM 2015]
Norepinephrine
Epinephrine
Acetylcholine
Dopamine
(c) Sweat glands are an exception - they use acetylcholine (ACh).
59. .... is responsible for the control of the reflex action:
[KU-2014]
Sensory nerves
Motor nerve
Sympathetic nervous system
C.N.S
(d) Reflex actions are controlled by the central nervous system (CNS).
60. Which cranial nerve supplies to heart
[KU-2014,2011]
III
VII
IX
X
(d) The vagus nerve (CN X) provides parasympathetic innervation to the heart.
61. Which is not a reflex action?
[KU-2014]
Blinking of eye
Watering of eye
Flexion of hand when needle is injected
Sweating from Skin
(d) Sweating is controlled by the autonomic system, not a spinal reflex.
62. Centre of balance in brain is
[KU-2013, 2011]
Cerebrum
Medulla oblongata
Cerebellum
Pons varolli
(c) The cerebellum maintains balance and coordination.
63. Which of the following is structural and functional unit of nervous system?
[AFMC 2001]
Axon
Neuron
Osteocyte
Neuroglia
(b)
64. Which of the following structures is in the diencephalon?
[Odisha JEE 2003]
Cerebral cortex
Olfactory bulb
Basal ganglia
—
(c)
65. Anterior choroid plexus is found in the roof of
[Manipal 2003]
—
Midbrain
Iter
Cerebrum
(c)
66. Third ventricle is in
[Karnataka CET 2008]
Medulla oblongata
Mesencephalon
Diencephalon
Cerebellum
(c)
67. Broca's area is connected with:
[Karnataka CET 2001]
Speech
Sensation of smell
Learning and reasoning
Receiving impulse from eyes
(a)
68. Parkinsonism is related with:
Brain
Spinal cord
Cranial nerves
Spinal nerves
(a)
69. Corpus callosum is seen in the:
[Karnataka CET 2001]
Brain
Pituitary
Ovary
Corpus luteum
(a)
70. Hunger and thirst are controlled by:
[Har. PMT 2000, WB-JEE 2011]
Medulla oblongata
Hypothalamus
Cerebellum
Cerebrum
(b)
71. Purkinje cells are found in:
Cerebellar cortex
Heart
Voluntary cells
CNS
(a)
72. The central canal is lined by:
[MH-CET 2003]
Squamous epithelial cells
Epithelium
Ependymal cells
Goblet mucous cells
(c)
73. Which part of the human brain controls posture and balance?
[WB-JEE]
Cerebrum
Medulla
Cerebellum
Thalamus
(c)
74. Which of the following is a part of forebrain?
Rhombencephalon
Rhinecephalon
Diencephalon
Telencephalon
(c)
75. Membrane covering the brain and spinal cord is called:
White matter
Arachnoid layer
Meninx
Gray matter
(b)
76. Hypothalamus is the intermediary between:
Nervous system and muscles
Endocrine system and chromaffin cells
Nervous system and endocrine system
Nervous system and —
(c)
77. In the brain of mammals, the genu and splenium are associated with:
[WB-JEE 2007]
Cerebrum
Cerebellum
Medulla
Vermis
(a)
78. Which of the following is a structure in the mesencephalon?
[CPMT 2000]
Thalamus
Inferior colliculus
Mamillary body
Cerebellum
(b)
79. Tree of life is:
[AMU 2005, BHU 2005]
Arbor vitae
Pons varolii
Organ of Corti
Diencephalon
(a)
80. Piamater and duramater are referred as:
Meninges
Cerebral sheath
Crura cerebri
Hypothalamus
(a)
81. Arbor vitae is composed of:
[WB-JEE 2007]
Gray matter
White matter
Neuroglia cells
Pons varolii
(b)
82. Pineal stalk arises from:
Ventral surface of diencephalon
Dorsal surface of diencephalon
Both dorsal and ventral surfaces of diencephalon
Antero-ventral surface of diencephalon
(b)
83. Foramen of Monro connects:
[CPMT 2001]
I ventricle to III ventricle
III ventricle to IV ventricle
II ventricle to III ventricle
I, II ventricles to III ventricle
(c)
84. Memory weakens if one of the following parts is injured:
Medulla
Cerebellum
Cerebrum
Hypothalamus
(c)
85. An injury to diencephalon may result in:
Loss of memory
Difficulty in breathing
Loss of sensation of heat
Loss of intelligence
(a)
86. Which part of the brain controls involuntary breathing?
Diencephalon
Hypothalamus
Medulla oblongata
Cerebellum
(c)
87. Vermis is a part of:
[PCS 200, Kerala PMT 200]
Optic lobe
Midbrain
Cerebellum
Medulla oblongata
(c)
88. Which of the following is found only in mammalian brain?
Medulla
Cerebellum
Corpus callosum
Cerebrum
(c)
89. The paracoel and diocoel are connected by:
Foramen of Monro
Foramen of Magendie
Foramen magnum
Iter
(a)
90. In human brain, central sulcus is found between:
Occipital and Temporal lobe
Temporal and Parietal lobe
Frontal and Parietal lobe
Occipital and Parietal lobe
(c)
91. Which of the following is found in brainstem?
Respiratory centres
Salivary centre
Vasomotor centres
All of these
(d)
92. The disease associated with brain is:
Bright's disease
Graves disease
Addison's disease
Parkinson's disease
(d)
93. Who was first to record EEG?
[St. Johns MC 2002]
Pavlov
Berger
Marshall Hall
Ranvier
(b)
94. Which of the following is recorded in EEG during deep sleep?
Alpha waves
Beta waves
—
Delta waves
(d)
95. The main cause of paralysis is:
[MPPMT 2001]
Defect in muscles
Complete destruction of motor nerves
Complete destruction of sensory nerves
None of the above
(b)
96. Subdural space is between:
Pia mater and Arachnoid
Dura mater and Arachnoid
Dura mater and Pia mater
Dura mater and Filum terminale
(b)
97. Pons varolii is the part of:
Midbrain
Cerebellum
Optic thalami
Diencephalon
(a)
98. Corpora striata occur in:
Cerebrum
Cerebellum
—
Diencephalon
(a)
99. Broca's centre in brain is related with:
Vision
Understanding
Speech making
—
(c)
100. Which of the following is a part of hindbrain?
[AIIMS 2002]
Medulla oblongata
Pons
Cerebellum
All of these
(d)
101. Which of the following is an example of reflex action?
[CMC Vellore 2008]
Knee jerk when tapped
Dog running after seeing food
Closing eyelids when light falls
Food moving in alimentary canal
(a)
102. In human brain, which controls movement?
[BHU 2002]
Breathing and hiccup
Movement of tongue
Movement of limbs
All of these
(d)
103. Corpora quadrigemina are located in:
Forebrain
Midbrain
Hindbrain
None of these
(b)
104. Choroid plexus is found in:
[JEE 2004]
Cerebrum
Cerebellum
Olfactory lobe
Choroid
(a)
105. Primary visual area is located in:
[Karnataka CET 2004]
Temporal lobe
Frontal lobe
Occipital lobe
Parietal lobe
(c)
106. Parkinson’s disease (characterised by tremors and progressive rigidity of limbs) is due to degeneration of neurons involved in motor control, which use neurotransmitter:
[AIPMT 2005, JIPMER 2007]
GABA
Dopamine
Serotonin
Norepinephrine
(b)
107. The covering protecting the brain is known as:
[Odisha JEE 2002]
Meninges
Pia mater
Gray matter
Pericardium
(a)
108. An action potential in the nerve fibre is produced when positive and negative charges on the outside and inside are reversed because:
[AIPMT 2000]
Na⁺ enters axon as K⁺ leaves it
Na⁺ enters axon
K⁺ leaves axon
Na⁺ ions enter axon
(d)
109. Which part of human brain is concerned with regulation of body temperature?
[AIPMT 2009, CPMT 2009]
Medulla oblongata
Hypothalamus
Cerebrum
Cerebellum
(b)
110. The satiety centres in the brain are located in:
[CPMT 2009]
Hypothalamus
Cerebral hemispheres
Cerebellum
Medulla oblongata
(a)
111. The cavity of diencephalon in brain is called:
[JIPMER 2008]
Iter
Third ventricle
Lateral ventricle
Foramen of Monro
(b)
112. Voluntary muscular coordination is under control of:
Cerebellum
Hypothalamus
Cerebral hemispheres
—
(a)
113. The anterior choroid plexus forms the roof of:
[EAMCET 2000]
Optocoel
4th ventricle
Diocoel (third ventricle)
Olfactory ventricle
(c)
114. Which nerve is exclusively motor in function?
[Pb. PMT 2004]
Trigeminal
Facial
Vagus
Spinal accessory
(d)
115. Fluid present in the spinal cord is:
Spinal fluid
Lymph
Cerebrospinal fluid
Plasma
(c)
116. From which part of spinal cord does the motor root originate?
Ventral root
Dorsal root
Gray matter
White matter
(a)
117. Which one of the following statements is correct regarding spinal cord?
[Karnataka CET 2013]
It is composed of outer white matter and inner grey matter
It is composed of outer grey matter and inner white matter
It is composed of outer grey matter and colourless inside
It is composed of grey matter only
(a)
118. Node of Ranvier is found in:
[MPPMT 2000]
Muscle bundles
Dendrite
Right auricle
Axon
(d)
119. The inhibitory effect of the vagus nerve on the heart is due to secretion of:
Acetylcholine
Norepinephrine
Glycine
Dopamine
(a)
120. How many pairs of cranial nerves in mammals are purely motor?
Two
Three
Four
—
(c)
121. Which of the following is a purely motor cranial nerve?
137. Which one of the following cranial nerves is not a motor nerve?
[PCS 2001]
11
111
I
V
() b
138. Vagus nerve is:
[PCS 2001]
mixed
sensory
motor
spinal
() a
139. Which cranial nerves are purely sensory?
I and VIII
I, II and IV
I, V and VII
None of these
() a
140. Cranial nerve which supplies regions of body other than the head and is longest:
Auditory
Oculomotor
Vagus
Trochlear
() c
141. The only cranial nerve which does not supply the cranial region but goes to visceral region is:
Vagus
Trigeminal
Hypoglossal
Abducens
() a
142. Which of the following causes transmission of impulse across the synapse?
[AMU 2001]
Ca2+
K+
Mg2+
Na+
() a
143. The cranial nerves which control the movement of eyeball are:
2, 3 and 5
3, 4 and 6
4, 6 and 7
5, 8 and 9
() b
144. Paralysis of muscles of mastication would be due to the loss of function of the cranial nerve:
Trigeminal
Facial
Abducens
Vagus
() a
145. Trochlear nerve supplies:
Nasal epithelium
Superior Oblique
Inferior oblique
Superior rectus
() b
146. Which of the following cranial nerve controls facial expression and mastication of food?
Fourth
Fifth
Seventh
Ninth
() c
147. Which one of these transmits nerve away from CNS?
Olfactory
Abducens
Auditory
Optic
() b
148. Which of the following depresses the heartbeat?
Pericardial
Spinal accessory
Trigeminal
Vagus
() d
149. Twelve pairs of ribs and twelve pairs of cranial nerves are found in:
Fish
Rabbit
Lizard
Frog
() b
150. Which of the following statements regarding nerves in frog is correct?
All cranial nerves are mixed
All spinal nerves are mixed
All cranial nerves are sensory
All spinal nerves are sensory
() b
151. Select the correct statement regarding spinal nerves:
Dorsal root is sensory and Ventral root is motor
Dorsal root is motor and sensory both
Dorsal root is motor and Ventral root is sensory
Ventral root is sensory and motor both
() a
152. Ventral root of spinal nerve is composed of:
[BHU 2001]
Somatic motor and Visceral sensory fibres
Somatic sensory and Visceral sensory fibres
Somatic motor and Visceral motor fibres
Somatic sensory and Visceral motor fibres
() c
153. Visceral and somatic sensory fibres respectively reach the spinal cord via:
Dorsal root only
Dorsal and Ventral roots
Ventral and Dorsal roots
Ventral root only
() b
154. In case of spinal nerves, the cell bodies of afferent fibres lie in:
Gray matter
White matter
Dorsal root
Ventral root
() c
155. The cavity within the spinal cord is:
Neurocoel
Blastocoel
Enterocoel
Schizocoel
() a
156. Number of spinal nerves in man is:
[Gujarat CET 2006]
31 pairs
32 pairs
12 pairs
29 pairs
() a
157. Spinal nerves are usually:
Afferent
Efferent
Mixed
Sensory
() c
158. Most postganglionic sympathetic fibres terminally release:
Acetylcholine
Dopamine
Norepinephrine
None of these
() c
159. If heart is stimulated through its vagus supply, heart rate will:
decrease
increase
show no change
none of these
() a
160. Stimulation of heart by sympathetic nerve is the result of:
release of acetylcholine
inhibition of norepinephrine
inhibition of acetylcholine
release of norepinephrine
() d
161. Parasympathetic nervous system increases the activity of:
gut, iris, urinary bladder
heart, adrenal, sweat glands
heart, lacrimal glands, pancreas
lacrimal glands, sweat glands, arrector pili
() a
162. The main chemical secreted by sympathetic nerves during emergency reaction is:
Gonadotropin
Oxytocin
Acetylcholine
Norepinephrine
() d
163. Parasympathetic nervous system:
increases heartbeat
decreases heartbeat
initiates heartbeat
has no effect
() b
164. Secretion of parasympathetic nerve ending is:
Glycine
5-HT
Noradrenaline
Acetylcholine
() d
165. Most postganglionic sympathetic fibres terminally release:
Norepinephrine
Acetylcholine
Dopamine
None of these
() a
166. Stimulation of sympathetic nervous system causes:
increased sweat secretion
increased tear secretion
decreased salivary secretion
all of the above
() d
167. Autonomic nervous system regulates all except:
[WB-JEE 2010]
Blood circulation
Respiration
Excretion
Learning and memory
() d
168. Who first described autonomous nervous system?
Berger
Pavlov
Langley
Harri
() c
169. Conditioned reflexes are different from unconditioned reflexes in that:
conditioned reflexes are under PNS
unconditioned reflexes are under ANS
unconditioned reflexes are limited to brain
conditioned reflexes are limited to brain
() d
170. Reflex action in a vertebrate is an essential display induced by:
Sympathetic nerves
Motor nerves
Sensory nerves
Autonomic response
() c
171. Demonstration of conditioned reflex was first made by:
Ivan Pavlov
William Harvey
Karl von Frisch
Robert Brown
() a
172. Two systems exerting opposite influences on the same organ/organs are:
Endocrine and Exocrine glands
Muscular and Nervous system
Endocrine and Nervous system
Sympathetic and Parasympathetic nervous system
() d
173. Parasympathetic nervous system:
dilates pupil of eye
accelerates heartbeat
stimulates saliva secretion
release of sugar from liver
() c
174. Stimulation of parasympathetic nervous system causes:
dilation of pupil
acceleration of heartbeats
release of glucose by liver
constriction of bronchi
() d
175. Sympathetic nerve fibres in mammals arise from:
[CPMT 2010]
Thoracolumbar nerves
III, IV, X cranial nerves
Sacral nerves
Cervical nerves
() a
176. Which of the following is not an effect produced by parasympathetic stimulation?
Dilation of the pupil
Increased saliva secretion
Increased stomach activity
Constriction of bronchi
() a
177. Damage of sympathetic trunk of one side of the body results in:
Turner syndrome
Horner's syndrome
Cushing's syndrome
Simmond's disease
() b
178. Which of the following is connected to both the sympathetic and parasympathetic divisions?
Optic lobe
Cerebrum
Pons varolii
Hypothalamus
() d
179. Preganglionic fibre is long in:
[CPMT 2010]
Sympathetic
Parasympathetic
Equal in both
None of these
() b
180. Craniosacral outflow refers to:
William Harvey
Robert Brown
Petrovitch Pavlov
Karl von Frisch
() c
181. Which one of these is not a reflex reaction?
[CPMT 2006, JCECE 2008]
Salivation
Blinking of eyes due to strong light
Flexion due to needle prick
Secretion of sweat
() d
182. Which of these is an example of conditioned reflex?
Watering of mouth at the smell of food
Withdrawal of hand on touching a hot plate
Cycling
Flowing of tears while peeling and cutting onions
() a
183. The sensory ganglion concerned in spinal reflex arc is located in:
cutaneous sense organ
gray matter of spinal cord
root of spinal nerves
ventral root of spinal nerves
() c
184. Reflex action is comparatively more rapid than normal reactions because the latter have to pass through:
pituitary
all along spinal cord
cerebral cortex
olfactory lobes
() c
185. Ivan Pavlov carried out experiments which were mainly concerned with:
Origin of life
Simple reflexes
Conditioned reflexes
Cardiac reflexes
() c
186. In reflex action, the reflex arc is formed by:
[MH-Cyr 2005]
Brain, Spinal cord, Muscle
Muscle, Receptor, Brain
Receptor, Spinal cord, Muscle
Muscle, Spinal cord, Receptor
() c
187. In a frog, if the connection between brain and spinal cord is severed, and the leg is pricked by a sharp needle, it is most likely that the animal will:
not show any reaction
move the leg that is pricked
move the leg and feel the pain
do not move the leg but feel the pain
() b
188. One of the following is not a reflex action:
Knee jerk
Boxing
Coughing
Eyelid closing
() b
189. Immediate involuntary response to stimulus is:
Reflex action
Autonomic response
Action control
None of these
() a
190. Which one is not a reflex action?
Closing of eyelid against rocking
Release of saliva secretion
Perspiration due to heat
Obeying the order
() d
191. Reflexes for blood are in:
Forebrain
Midbrain
Hypothalamus
Medulla
() d
192. Which process does not involve brain?
Spinal reflex
Cerebral reflex
Cranial reflex
Voluntary action
() a
193. A student is able to learn playing of harmonium more easily than typing. Playing of harmonium is a case of:
Residual learning
Conditioned reflex
Short term homeostasis
Long term homeostasis
() b
194. Chemical transmission of nerve impulse from one neuron to another or from a neuron to muscle is by:
[JKCET 2009]
Cholesterol
Cholecystokinin
ATP
Acetylcholine
() d
195. A nerve impulse can travel through a nerve fibre only if its membrane suddenly becomes more permeable to ions of:
Chloride
Sodium
Potassium
Calcium
() b
196. Fatigue is due to:
Release of more acetylcholine
Exhaustion of neurotransmitter
Release of more adrenaline
None of the above
() b
197. An inhibitory neurohumor is:
Glycine
Acetylcholine
Dopamine
Norepinephrine
() a
198. The neurotransmitter produced at the synapse and neuromuscular junction is:
[AFMC 2009, CPMT 2009]
GTP
ATP
Phosphokinase
Acetylcholine
() d
199. Myelin sheath is a layer covering a:
Muscle fibre in a vertebrate
Nerve fibre in a vertebrate
Nerve fibre in an insect
Chick embryo
() b
200. When a nerve fibre is stimulated, the inside of the membrane becomes:
Negatively charged
Positively charged
Depolarized
Filled with acetylcholine
() c
201. Which ion produces action potential in a nerve fibre?
[JIPMER 2008, Har. PMT 2008]
Na+
K+
Ca2+
Cl-
() a
202. Saltatory conduction of nerve impulse takes place through:
Myelinated fibre
Non-myelinated fibre
Gray fibres
None of these
() a
203. Which of the following acts as inhibitory neurotransmitter?
[BHU 2007]
Epinephrine
GABA
Acetylcholine
Histamine
() b
204. Sympathetic stimulation:
[RPMT 2006]
Inhibits heartbeat
Accelerates heartbeat
Performs both the above functions under different conditions
Does neither of the above functions
() c
205. Absolute refractory period during nerve impulse conduction is the period of:
Repolarization
Depolarization
Both repolarization and depolarization
Neither repolarization nor depolarization
() c
206. All the unconscious activities like heartbeat, involuntary breathing and gut peristalsis are controlled by:
Cerebrum and Medulla
Cerebellum and Medulla
Cerebrum and Cerebellum
Medulla oblongata only
() d
207. Anesthetics reduce pain by blocking the transmission of nerve impulses. The kind of chemical working as anesthetics are those that block:
Voltage-gated sodium and potassium channels and neurotransmitter receptors
Only the voltage-gated sodium channels in membranes
Only the voltage-gated potassium channels in membranes
Only the neurotransmitter receptors
() b
208. Mammalian brain differs from an amphibian brain in possessing:
Cerebellum
Corpus callosum
Olfactory lobe
Hypothalamus
() b
209. Which is mismatched? (RPMT 2002)
Cerebrum — Memory
Cerebellum — Equilibrium of body
Olfactory lobes — Sense of smell
Medulla oblongata — Temperature regulation
() d
210. Which of the following is not strictly considered a part of a neuron?
Nissl bodies
Myelin sheath
Axon
Dendrites
() b
211. The main function of cerebellum is:
Vision
Hearing
Balancing
Memory
() c
212. Which of the following communicates to the central canal of the spinal cord? (JIPMER 2002)
Fifth ventricle
Third ventricle
Fourth ventricle
Lateral ventricle
() c
213. Which of the following cranial nerves of the human being is both sensory and motor? (BHU 2001; Pb.PMT 2003)
Optic
Olfactory
Abducens
Trigeminal
() d
214. How many pairs of the cranial nerves are found in amniota? (RPMT 2001)
10
11
13
12
() d
215. Name the cranial nerves of human being viz., II, VII, VIII (Odisha JEE 2002):
Optic, Auditory, Facial, Hypoglossal
Oculomotor, Auditory, Abducens, Hypoglossal
Optic, Facial, Auditory, Glossopharyngeal
Optic, Facial, Abducens, Glossopharyngeal
() c
216. Among which one of the following groups of chemicals, all are neurotransmitters? (IAS 2002)
Glycine, Dopamine, Melatonin
Somatostatin, Serotonin, Acetylcholine
Noradrenaline, Somatostatin, Threonine
Acetylcholine, Noradrenaline, Dopamine
() d
217. The autonomic nervous system has control over: (Kerala PMT 2003; MPPMT 2007; JIPMER 2008; Har. PMT 2008)
Reflex action
Sense organs
Internal organs
Skeletal muscles
() c
218. Which part of the brain is involved in loss of control when a person drinks alcohol? (Kerala PMT 2003)
Thalamus
Cerebrum
Pons varolii
Cerebellum
(Medulla oblongata) d
219. The correct sequence of meninges from inner to outer side is: (Karnataka CET 2003; Uttarakhand PMT 2006; DPMT 2001)
Pia mater → Arachnoid membrane → Dura mater
Arachnoid membrane → Dura mater → Pia mater
Dura mater → Arachnoid membrane → Pia mater
Dura mater → Pia mater → Arachnoid membrane
() a
220. 'Pons' connects the: (Karnataka CET 2003)
Two lobes of cerebellum
Cerebrum and Cerebellum
Spinal cord with the brain
Two cerebral hemispheres
() b
221. Which part of the brain is responsible for temperature regulation, blood pressure, etc.? (Pb. PMT 2003)
Cerebellum
Mesencephalon
Hypothalamus
Medulla oblongata
() c
222. Which is activated in stress condition? (DPMT 2003)
Somatic
Sympathetic
Parasympathetic
Whole ANS
() b
223. The transverse nerve fibres connecting the two cerebral hemispheres are called: (CMC, Vellore 2003; Kerala PMT 2011)
Corpus luteum
Corpus albicans
Corpus callosum
Corpora quadrigemina
() c
224. A polarised neuron is said to be in: (CMC, Vellore 2003)
Action potential
Resting potential
Conducting stimulus
None of these
() b
225. What is the space between arachnoid and pia mater called? (JKCMEE 2003)
Meninges
Subdural space
Supraarachnoid space
Subarachnoid space
() d
226. Cerebellum of brain is: (JKCMEE 2003, 04; MH-CET 2003)
Concerned with the maintenance of posture/equilibrium
Responsible for olfactory functions
Controls optic functions
Both (a) and (c)
() d
227. Foramen of Monro connects: (MH-CET 2003)
1st and 2nd ventricle
3rd and 4th ventricle
Lateral and 3rd ventricle
4th and neurocoel
() c
228. In the serial wise arrangement of cranial nerves, after which nerve do we get trochlear nerve? (MH-CET 2003)
Optic
Olfactory
Oculomotor
Trigeminal
() c
229. In which part of the brain is corpora quadrigemina located? (MH-CET 2003)
Diencephalon
Mesencephalon
Prosencephalon
Rhombencephalon
() b
230. Injury to vagus nerve in humans is not likely to affect: (AIPMT 2004; Manipal 2007; AFMC 2008)
Cardiac movements
Tongue movements
Pancreatic secretion
Gastrointestinal movements
() b
231. In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive: (AIPMT 2004; Manipal 2007)
K+ into the cell
Na+ into the cell
Na+ out of the cell
K+ and Na+ out of the cell
() b
232. Unidirectional transmission of a nerve fibre is due to the fact that: (AIIMS)
Nerve fibre is insulated by a urinary sheath
Sodium pump starts operating only at the beginning then continues into the nerve fibre
Neurotransmitters are released by dendrites and not by axon ending
Neurotransmitters are released by the axon endings and not by dendrites
