NUERAL CONTROL & COORDINATION
1. PRACTICE SET-1 NUERAL CONTROL & COORDINATION
\section{Exercise-1}
Q.1 Pseudounipolar neurons occur in
(1) Pyramidal cells of cerebral cortex
(2) Retina of eye
(3) Schneiderian membrane
(4) Cells of dorsal root ganglion
Q.2 Which of the following glial cells form myelin sheath in PNS?
(1) Astrocytes
(2) Microglia cells
(3) Oligodendrocytes (
(4) Neurolemmocyte
Q.3 Which of the following factor is responsible for resting membrane potential?
(1) More permeability of membrane for \(\mathrm{Na}^{+}\)
(2) More permeability of membrane for \(\mathrm{K}^{+}\)
(3) Presence of negatively charged protein molecule outside the neuron
(4) Presence of positively charged protein molecule on inner side of the neuron
Q.4 Which of the following act is responsible for the depolarisation of the neuron?
(1) Opening of voltage gated \(\mathrm{K}^{+}\)channel
(2) Opening of voltage gated \(\mathrm{Na}^{+}\)channel
(3) Closure of voltage gated \(\mathrm{K}^{+}\)channel
(4) Closure of voltage gated \(\mathrm{Na}^{+}\)channel
Q.5 The resting potential across the membrane is
(1) \(-70 \mathrm{mV}\)
(2) \(60 \mathrm{mV}\)
(3) Zero
(4) \(60-90 \mathrm{mV}\)
Q.6 Total change in potential on applying a stimulus to a neuron is called
(1) Resting potential
(2) Action potential
(3) Spike potential
(4) Both (1) \& (2)
Q.7 If the inside of membrane becomes more negative it leads to
(1) Depolarisation
(2) Repolarisaton
(3) Hyperpolarisation
(4) Polarisation
Q.8 Suppose the terminal ends of axon are in contact with dendrites of four adjacent neurons, the nerve impulse of the axon will
(1) Travel in all the four neurons
(2) Get distributed in all the four neurons resulting in a weak impulse
(3) Travel only in one neuron which is in closest contact and with the same intensity
(4) Travel in none of the neurons because the impulse travels from dendrites of one neuron into the axon of another neuron
Q.9 Rate of conduction of impulse will be faster in case of
(1) Myelinated nerve fibres
(2) Thicker nerve fibres
(3) Non myelinated nerve fibres
(4) Both (1) \& (2)
Q.10 The synaptic cleft an intercellular gap separating the axon tip and the target neuron, is
(1) \(10-20\) nanometers
(2) 10-20 micrometer
(3) 1 decimeter
(4) 1-10 millimeter
Q.11 Axon endings release from its synaptic vesicles, a neuro-transmitter substance known as
(1) Acetylcholine
(2) Acetylcholinesterases
(3) Inositol-3 phosphate
(4) Diacylglycerol
Q.12 What is common about serotonin, acetylcholine, adrenaline and nor-adrenaline?
(1) All are antidiuretic drugs
(2) All are pain relieving drugs
(3) All are chemical transmitters or neurohormones
(4) All are blood pressure lowering drugs
Q.13 In the presence of \(\mathrm{Ca}^{2+}\) channel blockers, which of the following will be true?
(1) Neurotransmitter is released but \(\mathrm{Na}^{+}\)channel of post-synaptic neuron will not open
(2) Neurotransmitter is not released but \(\mathrm{Na}^{+}\)channel of post-synaptic neuron will open up
(3) Neurotransmitter is released but \(\mathrm{K}^{+}\)channel of post-synaptic neuron open up
(4) Neither neurotransmitter is released nor the \(\mathrm{Na}^{+}\)channel of post-synaptic neuron open up Q.14 The largest number of cell bodies of neurons in our body is found in
(1) Brain
(2) Retina
(3) Spinal cord
(4) Tongue
Q.15 One of the following is not the lobe of cerebral hemisphere
(1) Panetallobe
(2) Occipital lobe
(3) Temporal lobe
(4) Olfactory lobe
Q.16 Highly vascular and closely investing protective coat around brain is known as
(1) Arachnoid
(2) Pia mater
(3) Dura mater
(4) Sub-arachnoid space
Q.17 Corpus callosum is the link between
(1) Cerebellar hemispheres
(2) Mid brain and hind brain
(3) Cerebral hemisphere
(4) Brain and cranium
Q.18 The genu and splenium in brain are associated with
(1) Cerebellum
(2) Cerebrum
(3) Medulla oblongata(4) Vermis
Q.19 Due to presence of gyri and sulci; the surface area of cerebral cortex almost
(1) Doubles
(2) Becomes three times
(3) Becomes four times
(4) Becomes six times
Q.20 Which part of brain is involved in organising the behaviour of an organism related to its survival?
(1) Amygdal lobe
(2) Cerebral cortex
(3) Corpus callorsum (4) Hypothalamus
Q.21 Which part of the limbic system converts information from short term to long-term memory, essential in learning?
(1) Amygdala
(2) Basal ganglia
(3) Hippocampus
(4) Hypothalamus
Q.22 Characteristically large flask shaoed Purkinje cells are associated with
(1) Cerebral cortex
(2) Cerebellar cortex
(3) Pons
(4) Hypothalamus
Q.23 Which part is involved in movement of head to locate and detect the source of a sound?
(1) Superior colliculi
(2) Inferior colliculi
(3) Pons
(4) Medulla oblongata
Q.24 Activities of cerebellum are
(1) All involuntary but may involve learning in their early stage
(2) All voluntary and may involve learning in their early stage
(3) All voluntary and do not involve learning in their early stage
(4) All involuntary and do not involve learning in their early stage
Q.25 Basal ganglia is a collection of subcortical nuclei in the forebrain, at the base of the cortex. A primary function of the basal ganglia is
(1) Sensory integration
(2) Short term memory
(3) Planning stereo typed movements
(4) Neuroendocrine control
Q.26 Which part of the brain is like a defense castle controlling moods and plays an important role in emotional behaviour, such as aggression and remembering fear?
(1) Hippocampus
(2) Amygdala
(3) Limbic system
(4) Thalamus
Q.27 The link between paracoel and diacoel is through
(1) Foramina Luschka
(2) Foramina Magendie
(3) Foramen of Monro
(4) Aqueduct of Sylvius
Q.28 Pallium is
(1) Lateral walls of diencephalon
(2) Lateral walls of cerebrum
(3) Floor walls of paracoel
(4) Roof of paracoel
Q.29 Brain stem consists of
(1) Medulla oblongata, Pons varoli, Cerebellum
(2) Cerebellum, Diencephalon and Mid brain
(3) Both (1) \& (2)
(4) Medulla, Pons, Mid brain Q.30 The function of choroid plexus is
(1) To produce lymph
(2) To produce blood
(3) To produce cerebrospinal fluid
(4) To produce endolymph
Q.31 The pneumotaxis centre in the body is present in
(1) Heart
(2) Lungs
(3) Pons varoli
(4) Medulla
Q.32 One of the following transmits impulses from one side of the cerebellum to the other
(1) Pons varoli
(2) Crura cerebri
(3) Corpora quadrigemina
(4) Cerebellum
Q.33 Branched tree like structure present in cerebellum is
(1) Arborial
(2) Areole
(3) Arbor vitae
(4) Archenteron
Q.34 Vermis is
(1) A tiny worm
(2) Cavity of medulla
(3) The small median lobe of cerebellum in mammals
(4) A portion of mid brain
Q.35 The vomiting centre is situated in
(1) Cerebrum
(2) Cerebellum
(3) Medulla
(4) Hypothalamus
Q.36 The CSF moves from ventricle of the brain to subarachnoid space through
(1) Foramina Magendie
(2) Foramina Luschka
(3) Foramen of Monro
(4) Both (1) \& (2)
Q.37 End of spinal cord is
(1) Cauda equina
(2) Conus terminalis (3) Filum terminalis
(4) Funiculus
Q.38 Brachial swelling of the spinal cord extends from
(1) 4 th cervical to the 1 st thoracic vertebrae
(2) 1 st cervical to the 4 th cervical vertebrae
(3) 5 th cervical to the 8 th cervical vertebrae
(4) 1 st thoracic to the 4 th thoracic vertebrae
Q.39 Those nerves which carry impulses from the central nervous system to the muscles and glands are known as
(1) Sensory nerves
(2) Motor nerves
(3) Mixed nerves
(4) Afferent nerves
Q.40 Trigeminal nerve arises from brain in the region of
(1) Pons Varoli and divides into palatine, chorda tympani and hyomandibular
(2) Medulla and divides into palatine, hyomandibular and chorda tympani
(3) Cerebellum and divides into opthalmic, maxillary and mandibular
(4) Pons Varoli and divides into opthalmic, maxillary and mandibular
Q.41 Nerve related to eye ball movement, accommodation and contraction of pupil
(1) Optic
(2) Auditory
(3) Oculomotor
(4) Trochlear
Q.42 How many pairs of cranial nerves are purely sensory?
(1) Five
(2) Four
(3) \(\operatorname{Six}\)
(4) Three
Q.43 Gastric and pancreatic secretion, gastrointestinal movements, respiratory reflexes, visceral reflexes are controlled by
(1) Vagus
(2) Abducens
(3) Oculomotor
(4) Trochlear
Q.44 One of the fol lowing pair is motor nerve
(1) Oculomotor and Facial
(2) Vagus and Trigeminal
(3) Optic and Olfactory
(4) Trochlear and Hypoglossal
Q.45 Lateral rectus muscle of eye is provided with which cranial nerve?
(1) III
(2) IV
(3) \(\mathrm{V}\)
(4) VI Q.46 Paralysis of jaw muscles is due to loss of function of which cranial nerve?
(1) III
(2) \(\mathrm{V}\)
(3) VII
(4) \(\mathrm{X}\)
Q.47 Which of the following cranial nerves in man is both sensory and motor?
(1) Optic
(2) Olfactory
(3) Trigeminal
(4) Auditory
Q.48 Which of the following cranial nerves are linked with taste buds?
(1) VII \& III
(2) IX\& II
(3) IV \& VIII
(4) VII \& IX
Q.49 Smallest cranial nerve of the body is
(1) Trigemminal
(2) Abducens
(3) Opthalmic
(4) Trochlear
Q.50 The fourth cranial nerve of man is
(1) Abducens
(2) Trochlear
(3) Auditory
(4) Oculomotor
Q.51 The spinal nerve plexus involving the 1 st thoracic spinal nerve is
(1) Cervical plexus
(2) Brachial plexus
(3) Lumbar plexus
(4) Sacral plexus
Q.52 The number of spinal nerves in man is
(1) 31
(2) 62
(3) 12
(4) 24
Q.53 Which is a function of parasympathetic nervous system?
(1) Acceleration of heart beat
(2) Constriction of pupil
(3) Stimulation of sweat gland
(4) Contraction of erector pili
Q.54 The ganglia which lie nearer to the tissues and away from the chain and in which preganglionic fibres terminate are known as
(1) Autonomic ganglion
(2) Collateral ganglion
(3) Paratonic ganglion
(4) None of these
Q.55 Which of the following cranial nerve is involved in the sympathetic nervous system?
(1) III
(2) VII
(3) Both of these
(4) None of these
Q.56 The neurotransmitter with the sympathetic post-ganglionic nerve fibre terminating at the sweat gland is
(1) Epinephrine
(2) Acetylcholine
(3) Adrenaline
(4) Both (1) \& (3)
Q.57 Reflex action exhibited by
(1) Sympathetic nerves
(2) Sensory nerves
(3) Automatic response
(4) Motor nerves
Q.58 In reflex action, the reflex arc is formed by
(1) Brain-spinal cord-muscles
(2) Receptor-spinal cord-muscles
(3) Muscles-receptor-muscles
(4) Muscles-spinal cord-receptor
Q.59 Which one is not a reflex action?
(1) Closing the eye lids suddenly
(2) Release of saliva
(3) Obeying the order
(4) None of these
Q.60 Receptors of pain are
(1) Free nerve endings
(2) Merkel's discs
(3) Meissner's corpuscles
(4) Pacinian corpuscles
Q.61 Krause's end bulbs are the skin receptors which are concerned with the sense of
(1) Touch
(2) Heat
(3) Cold
(4) Pressure
Q.62 Meissner's corpuscles are located in
(1) Pancreas and secrete trypsinogen
(2) Adrenal and secrete trypsinogen
(3) Spleen and destroy erythrocytes
(4) Skin and perceive gentle pressure
Q.63 Tactile organs at the root of hair are
(1) Free nerve endings (Nerve Basket)
(2) Epidermis and dermis
(3) Dorsal branches of spinal nerves
(4) Touch corpuscles Q.64 The receptors located in muscles, joints, tendons are known as
(1) Exteroreceptors
(2) Proprioreceptors
(3) Interoreceptors
(4) External receptors
Q.65 The corpuscles lying deep in dermis and responsible for deep pressure are known as
(1) Pacinian corpuscles
(2) Meissner's corpuscles
(3) Merkel's discs
(4) Ruffini's endings
Q.66 White of the eye is
(1) Cornea
(2) Sclera
(3) Choroid
(4) Conjuctiva
Q.67 Pupil is regulated by
(1) Radial muscles
(2) Circular muscles
(3) Meridonial muscles
(4) Radial and circular muscles
Q.68 The exposed transparent region of eye ball represents
(1) Fovea
(2) Cornea and conjuctiva
(3) Fibrous coat
(4) Cornea
Q.69 Macula lutea is a part of
(1) Optic nerve
(2) Sclerotic
(3) Choroid
(4) Retina
Q.70 Colour to the eye is imparted by
(1) Lens
(2) Pupil
(3) Iris
(4) Vitreous humour