Coordination and central nervous, Lecture notes of Chemistry

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NERVOUS SYSTEM WORKSHEET BY SKN Q.1 Which of the following receptors produce sensation of pain? A) Mechanoreceptors C) Chemoreceptors ® Nociceptors D) Thermoreceptors Q.2. When a nerve impulse jumps from one node of Ranvier to the next in a myelinated neuron, it is called? A) Membrane potential C) Resting potential @Saltatory conduction D) Action potential Q3 The right and left Gerebral hemispheres are connected by a thick band of nerve fibres called: aAKow A) Medulla C) Pons @ Corpus callosum D) Hippocampus Q.4— A nerve impulse is initiated by an appropriate stimulus under normal conditions which is called: ® Threshold stimulus B) Abnormal stimulus Q.5 The site of communication between nerve @ Synapse B) Synapsis Q.6 The number of spinal nerves in hu A) 12 pairs B) 24 pairs Q.7__Inneurons the sodium-pot A) CI in and Na* out of th B) Ca** in and K* out of the Q.8 The CNS is protec \ A) One layer of ee layers of meninges , B) Two layers ayers of meninges” Q.9 The part of b i g, heart ‘rate 4 swallowing is: A) Cerebrum ctl fy B) Cerebellum D) ie Q.10 Depolarization i is due to _/A) Influx ‘of Kt 7) Influx of Na* = EH aS Na* Q. 11 ae chief structural and functional. units of the nervous vous system are: A) Neuroglia % Neuro; Q.12 : Axon Wow \ axon dondehe B) Myelin sheath yy D) Soma Q.13 The is located in a goes the thalamus and cerebrum: ® Hypothalamus oy q PC) Hippocampus (aX do we rn _ByLimbic system D) Amygdala 7 ot Q.14 Which structures respond when they are stimulated by impulse coming through motor neuron? - A) Receptors | y 4 CO Effectors B) Responses D) Transduction Q.15 In general, insulin depresses blood glycose level, in a variety of ways which include all of the following, EXCEPT: A) By increasing glycogen synthesis B) By increasing cell utilization of glucose C) By conversion of glucose into lipid and protein D) By conversion of glycogen into glucose Q.16 Insulin is produced by: A) acells of Langerhans C) Adrenal cortex B) B cells of Langerhans D) Hypothetic neurosecretory cells Q.17 Cellular glucose uptake and utilization is enhanced by: A) Insulin C) ADH B) Glucagon D) Aldosterone Q.18 The lack of vasopressin produces: A) Diabetes insipidus C) Antidiuresis B) Diabetes mellitus D) Conservation of water Q.19 Q.20 Q.21 Q.22 Q.23 Q.24 Q.25 Q.26 Q.27 Q.28 Q.29 Q.30 Q.31 Q.32 Q.33 Q.34 Q.35 Q.36 Q.37 Islets of Langerhans have a large number of cells: A) Alpha C) Gamma B) Delta DpBeta Hypoglycemia may occur as a result of: A) Excess of insulin B) Excess of glucagon Greek word, hormone means: A) Exciting C) Exciting and setting in motion B) Setting in motion D) Initiating Arousal of hunger is detected by the receptors present in the: A) Gut wall C) Stomach wall B) Intestinal wall D) Oral cavity i ofgieu ¢c () one xo C) Dendron ~ \& Ge. B) Dendrites D) Cell body wee They play a vital role in the nutrition of neurons an r protection by myelin sheath: A) Neuroglia a BHaterneurons yyove The process conducting impulses away fro’ A) Myelin 22D. bool, Which of the following is a part of A) Pons B) Cerebellum | Part of hind brain responsi jum of body is called: A) Medulla AA & ®y Cerebellum cool aor All are parts of fo Z~,r A) Thalamus ‘ ‘X 4 . B) Limbic syst i Ganglia are t 2d A) Axons waves 9 nor B) Dendrites In the following diagra Membrane +50 Potential = 0 >=— } (mV) -50 Nx k -100 — bh a “Time (millisecontls) % yy A) Hyperpolarization — C)Repolarization B) Polarization \ = Depolarization Which structures detect ch MSc i in te external and internal environment of the animal? A) Receptors q) Py i C) Effectors B) Responses fi Dy Transduction crowed Wu, White matter of spinal cord is made up of: A) Motor nerve fibres C) Mixed nerve fibres B) Sensory nerve fibres fi) Myelinated nerve fibres Reflex movement of eyes is controlled by: 4) A) Hypothalamus C) Hindbrain (nome B) Forebrain 6) Midbrain The CNS of man consists of: A) Brain and PNS C) Receptors and effectors B) Effectors and spinal cord Brain and spinal cord The hormone that antagonizes the ation of insulin is: A) ADH C) Aldosterone B) Cortisol D) Vasopressin Which of the following is a relay centre connecting hind brain with the fore brain? A) Medulla oblongata . Hypothalamus NE Reticular formation > mean Thalamus tis the part of the hindbrain of vertebrates that controls automatic activities: 4) Medulla C) Cerebellum B) Pons D) Cerebrum UN Q.56 It acts as a major coordinating centre controlling hunger, the menstrual cycle, water balance, the sleep-wake cycle etc.: A) Hippocampus ypothalamus B) Thalamus ) Pons Q.57_ It plays an important role in the formation of long-term memory: A) Thalamus C) Pons B) Hippocampus D) Medulla Q.58 The normal speed of nerve impulse in humans is meters per second but maximum recorded is meters per second: A) 50, 100 120, 200 B) 100, 120 ) 200, 250 c t H A) Hypothalamus C) Spinal cord— B) Thalamus D) Neurons Q.60 Depolarization to repolarization of a cell membrane of neuron takes _C secon A) 1-2 ——7 B) 1-3 Q.61 A typical neuron at rest: A) Is more positive outside than inside B) Is more negative outside than inside Q.62 Itis the pathway of passage of impuls A) Nerve impulse B) Reflex arc Q.63 Short term and quick coordinatio A) Nervous coordination B) Hormonal coordination Q.64 It is best developed in the b A) Cerebrum B) Cerebellum ither side either side Q.65 Potassium ion i centration ins ie than outside: hree | B) Five Q.66 The part of the les smooth. and. accurate motions and maintains body positio ion is called: V A) Cerebrum, ¥ B) Cerebellum Q.67 Nerve impulse is. carried across oe ilar junction through ~~A) Channels transmitters B) = ; \D) Receptors Q.68 respond directly to the level of blood glycose: A) Thyroid'gland” » “ C) me of Langerhans B) Parathyroids X\ D) Adrenal glands Q.69 Insulin inhibits the hydrolysis of ____+_ in the liver and muscles: A) Glycogen a) Lipid B) Glucose > a = D) Protein Q.70 Which one of ‘the following disorders indicates some hormonal deficiency? A) Grave’s disease J C) Exophthalmic goiter B) Diabetes mellitus D) Diabetes insipidus Q.71 Glycogen is essentially antagonistic to: A) Aldosterone C) Insulin B) ADH D) Oxytocin Q.72 Pick up the hormones which are polypeptides in nature: A) Insulin and glucagon B) ADH and oxytocin C) Thyroxine, epinephrine and non-epinephrine D) Testosterone and cortisol Q.73 Pick up the one which antagonizes the action of calcitonin? A) Aldosterone C) Cortisol B) Glucagon D) Parathormone Q.74 A sensory receptor that responds to smell is called: A) Chemoreceptor C) Photoreceptor B) Mechanoreceptor D) Thermoreceptor Q.75 It also increases the rate of breakdown of fats: A) Insulin C) Glucagon B) Aldosterone D) Androgens Q.76 Neurotransmitters are released from: A) Axon endings C) Synaptic membrane B) Dendrite endings D) Cell body Q.77 Of the many kinds of ions present in the nerve cells and the surrounding fluid: A) Sodium (Na*) and potassium (K*) ions are the most important B) Sodium (Na*) and organic ions are the most important C) Organic ions and potassium (K”) ions are the most important D) Sodium (Na+) and chloride ions are the most important Q.78 Which structure carries impulse towards cell body? A) Myelin sheath C) Soma B) Axon D) Dendron Q.79 Homeostatic thermostat is located in the: A) Pons C) Medulla B) Cerebellum D) Hypothalamus Q.80 Glands and muscles respond when they are stimulated by impulse coming via: A) Associative neuron C) Relay neuron B) Sensory neuron D) Motor neur Q.81 A chemical that is released by a nerve cell close to a cell and that influences the activity of the s A) Neurotransmitter B) Enzymes Q.82 The cold receptors are nearly temperature receptors: A) 27 times ' B) 10 times Q.83 Spinal cord is protected by A)2 ) Q.84 Somatic nerves in rve cell, a muscle, or a gland Q.85 Which of the ? A) Sensory ne C) Efferent. neuron f B) Inter neuron ) Motor neuron. . Q.86 Forebrain includes thal mbi tem and ‘the: wA) Cerebrum\ C)I , B) Hypothalamus D) Ce um Q.87 A cell of the nervous system that provides pport and insulation to neurons is called: A) Neuron ; \C)’Axon tr 3 Dendron ; [»5) Glial cell myehen seat Q.88 These show response to stimuli of light: i A) Mechanoreceptors Photoreceptors B) Thermoreceptors ~ D) Chemoreceptors Q.89 is protein in nature: fo A) Thyroxine ) ~C) Glucagon B) Oxytocin , me | D) Vasopressin Q.90 All are parts of hind brain, EXCEPT: A) Medulla | C) Cerebellum B) Pons . y )) Hypothalamus oor consists-of spiral and much twisted endings, each of which end in. A) Pacinian’s corpuscles C) Meissener’s corpuscles B) Renal’s corpuscles D) Neural’s corpuscles Q.92 Thalamus and mexehgums are the part of: &) Fore brain C) Hind brain B) Mid brain D) Spinal cord When your finger accidentally gets caught in a door, the pain message is sent to youx brain ») through: — A) Homeostasis C) The medulla B) Sensory receptors D) Effectors Q.94 This makes the inside of neuron membrane more negative: Large conc. of negative organic ions C) Small cone. of negative inorganic ions B) Large conc. of positive organic ions D) Small conc. of positive inorganic ions Q.95 By definition motor neurons connect: A) Sensory organs with CNS C) Sensory organ with effectors @ Coit figs D) Spinal with brain C. Na* and K~ infix / D. Na* and - ens \ Q.114 The correct sequence for depolarization a ati timulus applied-at_a site on polarized sianthivane ncreased permeability for Na*~ - 3. Generation of action potential 4. Increased permeability for-R*) 5... Restoration of membrane potential_—— 2393455 “B.1 3453352345 3p4 55 ‘ D1 32433535, Q.115 In lowing diagram of action potential in a neuron, x” depicts? ~ poe dl aa a i +50 Membrane Potential (mv) -5094x' > -100: Time (milliseconds) CK deaninviention B. Repolarization C. Polarization D. Hyp i A. Gap junction C. Synaptic gutter Q.117 Which of the following is incorrec A. Fusion of synaptic vesicles wit with B. Release of neurotransmi © Binding of neurotransm: j tor located on pre- tic membrane D. Change in permeability o or ions Nae Q.118 Nervous system vin : < zs X A. Dorsal and rigi al, hollow and diffused C. Ventral and ‘and'central Q.119 Cerebral hem each other a corpus callosum that is a band of: ~ v A. Dendrites Axons . Dendrons. , 4 Q.120)The primary function is to ‘ A. Produce CSF, B. Pr hormones C. Communicate two hemispheres yo, Coffimunicate brain with rest of body Q. 121 These contain cell bodies of neurons: ih LE i, i) A. Gray-and-white matter Ganglia and gray matter C. Nerve-and ganglia D-Nerve-and white matter- midbrain B. In front of cerebellum, above pons a pons D. ‘In front of pons, above cerebellum Q.123 Se sory division of peri yheral: nervous system communicates between: Recep and, CNS “B. Effectors and CNS Receptors and effectors D. CNS and muscl: Q.124 All of the following body functions are controlled bf ANSbexcept: A. Limb movement _, ff y @ Glandular secretions — inwolwnturyy Cc. Digestion i in stomach dt con MD. Blood pressure Q.125 Stimulation of vagus nerve | will cause: A. Inereased-blood pressure— B- Decreased heart rate garasyen oh C. Increased blood flow to limbs —_D. Dilation of pupil — vest 7 digeste Peripheral nervous system is further divided into: # @. Motor and sensory divisions x B. Sympathetic and parasympathetié. systems > C. Autonomic and somatic : divisiong¢D-Spinat cord-anc-brain- Q.127 The part of the brain which guides smooth and accurate motions and maintains body position is called: ~ — r A. Cerebrum * -B-Pens cerdlonmn . Cerebellum > D-Medutla cevelvelwur Q.128 It controls rate and pattern of breathing: Pons B. Cerebrum C. Medulla D. Cerebellum Q.129 It is true about thalamus: A. Crucial motor relay center B. Present in ventricles *K Part of limbic system © (Esensory relay center > Q.130 All spinal nerves are: A. Motor nerves only @ Mixed nerves only C. Sensory nerves only D. Motor, sensory and mixed Q.131 Parkinson’s disease is believed to be caused by cell death in a brain area that produces: A. Acetylcholine B. Dopamine — C. Serotonin D. Epinephrine Q.132 Doctor, during examining the epilepsy patients performs electroencephalography. During this process, membrane potential that spreads on/across is recorded. A. Cristae B. Cisternae — C. Neurolemma D. Sarcolemma Q.133 Which of the following is false about hormones? * A. Transported through blood B. Released by ductless gland C. Responsible for long term regulatory changes D. Initiate new biochemical reaction Q.134 Find out the mismatched pair from the given optio A. Glucagon - Protein B. ADH - Ami C. Oxytocin - Polypeptide Q.135 SRF is produced by and A. Anterior pituitary, hypothalamus B. Hi) C. Post pituitary, hypothalamus D. Q.136 ADH secretion is stimulated by d detected by osmo-receptors in: A. Kidneys C. Posterior pituitary Re Q.137 Gastrin is produce by mu ion of stomach nder the influence of: A. Vitamin rich food As blood volume which is C. Protein rich food rich food Q.138 All of the follo ion of MSH and darkening of skin except: A. Excess light s disease C. Pregnancy ing disease Q.139 Hormones tha’ A. ACTH, FSH Cc. ACTH, ICSH othalamic releasing factor: ee ne i Q.140It is caused\due to fer a Mersasl body protein which continuously stimulates the thyroid to produce its secr a) in excess: _ A. Myxoedema B. Grave’s disease C. Cretinism ‘ D. ‘Addison’ s disease Q.141 Excess or deficiency of ACTH will effect functioning of: A. Hypothalamus - B. Adrenal cortex C. Anterior pituitary, D. Adrenal medulla Which of the following hormone depresses blood glucose level? A. Insulin \ By Cortisol C. Glucagon Y ~D. Calcitonin Q.142 Over-secretion of growth Mofmone i in child leads to: A. Dwarfism | f B. Gigantism C. Cretinism — j D. Tetany Q.143 All are symptoms of diabetes mellitus except: A. Accumulation of toxic metabolites from fats B. Derangement of nervous system C. Body becomes dehydrated D. Decreased blood glucose level Q.144 A larger quantity of dilute urine is produced in diabetes insipidus. This disease is due to the deficiency of: A. Antidiuretic hormone B. Thyroxin C. Aldosterone D. Cortisol Q.145 Which one is used as messenger in both nervous and hormonal coordination? A. Adrenaline B. Oxytocin C. Acetylcholine D. Nicotine Q.146 A male body tends more towards the form of immature female after: A. Spermiogenesis B. Castration C. Deficiency of dopamine D. Hypergonadism Q.147 Which hormone increases calcium level in the blood? A. Calcitonin B. Parathormone C. Cortisol D. Thyroxin Q.148 Which of the following will prevent ovulation during pregnancy? A. FSH B. Estrogen C. LH D. Progesterone Q.167 During nerve impulse, if outer surface is more positive than inner surface, the stage is: Active membrane potential B) Resting membrane potential C) Action potential D) Membrane potential Q.168 Brain is protected by aseraniclicnetin as: + A) Ventricles B) Pleurae eninges D) A and C Q.169 Corpus callosum connect: A) Two spinal nerves {Pro cerebral hemispheres C) Medulla oblongata to spinal cord D) Mid brain to fore-brain Q.170 When 2K+ are transported actively inward: Mwy A) The number of Na+ transported outward is 1 B) The number of Na+ transported outward is 2 The number of Na+ transported outward is 3 D) The number of Na+ transported outward is 5 0 r I. It is a relay station betweenbodyand cerebrum. II. It is a relay station between spinal cord III. It is a relay station between body an A) I only C) II only Q.172 All of the following are controlled 1. Breathing 3. Swallowing A) 1 and 2 C) 1,2 and 3 Q.173 Neurotransmitters Open channel; C) Open chann: Q.174 The smooth a A) Thalamus C) Medulla oblon: eit Q.175 Viscera and smooth mu: pnd oes A) Somatic nervous sys re i¢ nervous system ; iavalunayy C)-Central nervous-system D) NO these Q. 116 After the depolarization of ‘post-synaptic ne ‘urolemma: 1. - Neurotransmitters are generally aken up by Schwann cells. 2. Neurotransmitters are mostly laid i in svi cleft cleft. G. Neurotransmitters are mostly degraded by enzymes. A) 1 only eee, B)2 only ©) 3 only x D) Either 1,2 or3 Q.177 Hyperpolarization across eae” rite due to: A) Outward diffusion of Na* ~ ®) Late closing of K* channels C) Influx of Na* Pm wae D) Distribution of charge Q.178 The original ion ‘gradients ace hyperpolarization in neurons are réstored-by: A) Na* channels a B)K’ channels @ Na* /K* pump y D) Ca** channels © @ ®@ Q.179 Velocity of impulse‘in axon fibre depends upop diamets length and myelin sheath. Find the true statement(s). _ 1. Smaller and thicker the axon, faster it transmits information. 2. Unmyelinated axon transmits information slower than myelinated neuron. 3. Larger and thinner the axon, faster it transmits information. A) 1 only B) 2 only C) 1 and 3 D) 1, 2 and 3 Q.180 Identify the type of neuron. axon, Several dendrites A) Unipolar neuron B) Bipolar neuron @Multipolar neuron D) Either A or B ich of the following acts as a messenger in both chemical and nervous coordination? tylcholine B) GABA C) Endorphins D) None of these Q.182 Parasympathetic nervous system is related to all of the following except: I. Promotion of peristalsis and digestion t II. Dilation of pupil feck dides III. Slow heart beat A) Ionly bi only C) III only ) I, Tl and Il Q.183 Due to diffusion of Na+, membrane potential from -70mV towards 0 and then Reaches to 50 Mv B) Reaches to -50 mV ) Reaches to 70 mV D) Reaches to -70 mV Q.184 A wave of electrochemical change which travels along length of neuron is termed as: A) Reflex arc e 8) Nerve impulse C) Threshold potential D) None of these Q.185 What happens when depolarization of post-synaptic membrane happens? A) Action potential is inhibited B) Vesicle’s fuse with pre-synaptic membrane ©) Action ial is generated D) Neurotransmitters are released into synaptic cleft to be: A) Depolarization B) ing membrane potential ~—— Geena period D) None of these na ctive membrane potential is characterized by: ic More negative inside of neuron than outside. ) Q.187 More positive inside of neuron than outside. Same concentration of Na+ and K+ on both inside a e of neuron. Action potential Q.189 Voluntary muscles are regulated I Somatic nervous system t f s system py i . nomic Nervous systen: i - i f[fA Q.190 Concentration ( A) 10 ti Q.191 Axon c < A) Post-synapti naptic terminal ~~ C) Nissl’s gr: A) Node of Ranv C) Nissl’s granules — Q. 193, The neuron which ca: S; ¥ dy > / “ A) To effectors\are sensory neurons B) To PNS are sensory neurons \ wag © effectors are motor neurons None of these Q. 194 The expanded tips of pre-synapti\npivong are known as: (BY Synaptic knob —— ‘B) Cal “jum channels C) Synoptic vesicles Q.195 of the following in cytoplas = — of these Cinewrgty nake it moré negative except: Asmino acids ~ odium ions : A C)RNA - * \ ‘D). All of these make cytoplasm negative aide The’period of pe nerve fiber is called: A) Spike potential. Depolarization © Rape ia gre j Refractory period Q.198 W) ich one of the following is considered as the 2nd largest part of of brain? Cerebellum B) Cerebrum ereloy C) Medulla oblongata D) Hypothalamus Ct All of the following are the components of reflex éxce| A) Afferent nerve B) Efferent nerve rain D) Effectors Q.200 Which type of nervous system prepares body for highly energetic activity? A) Somatic nervous system B) Parasympathetic nervous system arvesr Sympathetic nervous system ) All of these Q.201 Dorsal root of a spinal nerve contains: @® Motor nerve fibers B) Sensory nerve fibres C) Both A and B D) Interneurons Q.202 The part of human brain that regulates anterior pituitary gland is: ® Hypothalamus B) Cerebrum ) Thalamus D) None of these Q.203 All of the following are the components of brainstem except: @ B) Pons C) Glycine D) None of these Q.221 During saltatory conduction, a nerve impulse jumps: A) From one node of myelin sheath to another B) From one node of Ranvier to another C) From one synapse to another D) None of these Q.222 Which neurotransmitter is hydrolyzed by monoamine oxidase? A) Acetylcholine B) Adrenaline C) Both A and B D) None of these Q.223 The path of nerve impulse during reflex action is known as: A) Active membrane potential B) Depolarization C) Reflex arc D) All of these Q.224 Pick up an amino acid derivative hormone: A) Prolactin C) Thyroxin B) Estrogen D) Oxytocin Q.225 Identify endocrine gland: A) Salivary gland C) Adrenal glan B) Sweat gland D) Pancreas Q.226 High calcium in the body fluid may be the cause of: A) Tetany C) Anemi B) Kidney stones i Q.227 Endocrine system consists of: A) 10 endocrine glands B) 20 endocrine glands Q.228 Oxytocin production during labor A) Negative feedback mech B) Precursor activation Q.229 Which lobe of pituitary gla A) Anterior B) Middle Q.230 It is characteri A) Dwarfism B) Acromegal Q.231 Calcitonin is sec C€) nal hidhd i A) Pituitary gland _B) Parathyroid gland D)/ tier Q.232 It inhibits the hydrolysis of glycogen in iver and the muscles: _ A) Glucagon ’ mC) Corti 1 “SB) Insulin \ \ D) Aldosterone Q.233 In male, luteinizing hormone is also called: A) FSH. y C) LTH B) ICSH eee, D) LH Q.234 Failure to produce insulin leads to a condition called: A) Diabetes insipidus ‘ C) Addison’s disease B) Diabetes mellitus i _.» D) Cushing’s disease Q.235 Which one of the following is not involved in sugar metabolism? A) Insulin —_C) Cortisone B) Glucagon i I D) Aldosterone Q.236 Insulin and glucagon are in nature: A) Steroids “se C) Proteins B) Amino acid derivatives D) Polypeptides Q.237 In mammals it consists of two lobes situated below the larynx: A) Adrenal gland C) Parathyroid gland B) Thyroid gland D) Prostate gland Q.238 Calcitonin is antagonistic to: A) Thyroxine C) Parathormone B) Calcitonin D) Insulin Q.239 It is believed that oxytocin and ADH are produced in and travel down the nerves to the posterior lobe of pituitary to be stored: A) Hypothalamus C) Adrenal gland B) Pituitary gland D) Thyroid gland Q.240 Development of secondary male characteristics is caused by: A) Androgens C) Corticosterones B) Aldosterone D) Cortisol Q.241 Decrease in blood pressure, blood volume, and osmotic pressure of the blood causes the secretion of: A) MSH C) ADH B) Oxytocin D) TSH Q.242 and are secreted in stress situations: A) Aldosterone, corticosterone C) Glucocorticoid, mineralocorticoid B) Androgen, aldosterone D) Adrenaline, nor-adrenaline Q.243 Beta cells of pancreas secrete: A) Insulin C) Glucagon B) ADH D) Aldosterone Q.244 produced by the ruptured follicle in response to LH: A) Estrogens C) Oxytocin B) Progesterone D) FSH Q.245 Too much cortical hormones are produced in: A) Grave’s disease C) Addison’s disease B) Parkinson’s disease D) Cushing’s disease Q.246 A hormone, secreted by the pineal gland, that is involved in the regulation of circadian cycles is called: A) Adrenaline C) Insulin B) Melatonin D) Epinephrine Q.247 Which part of neuron may act as receptor A. Dendrite C. Axon Q.248 receives and processes s, i ponses, store memories, generates thoughts and emotions. ' A. Nerves =, C. Brain Q.249 The pupil dilation is und A. Central nervous system C. Peripheral nervou Q.250 Grey matter is c A. Schwann ce. C. Cell bodies Q.251 Which of the A. Epinephrine Sa We Cc. Meetyicdoline D.D ines Q. 252. The type of receptors the hype m= & are: A. Mechanoreceptors B. Chi ceptors ‘er Photoreceptors. Pe D. e receptors Q. 253 Part of motor neuron which makes § mapse with sarcolemma is: A. Motor unit i _ Axon C. Dendron D. Dendron and axon Q.254 It is not true about cell body of neuron: | A. Main nutritional part B. It contains axoplasm C. Biosynthesis of materials DA Regenerate axonal and dendrite fibre Q.255 It carries sensory —— to, limbic system and cerebral cortex: A. Thalamus ws B. Medulla C. Pons fg i D. Cerebellum Q.256 Blinking of eyes, which is an example of reflex action, is controlled by: A.CNS % 4 B. Spinal cord C.PNS eK” D. Brain Q.257 The nerves are: A. The bundles of axons bounded by connective tissues B. The bundles of axons or dendrites bounded by connective tissues C. The bundles of dendrites bounded by connective tissues D. The bundles of cell bodies bounded by connective tissues Q.258 Optic nerve is the part of: A. Central nervous system B. Spinal nerves C. Peripheral nervous system D. Somatic nerves Q.259 Which of the following will probably absent in a neuron? A. Centrosome B.Neurofibrils C. Mitochondria D. Microtubules Q.260 Which of the following membrane potential depicts hyperpolarization? A. +70mV B. -90mV C. +50mV D. -70mV Q.261 Pick the odd one out: A. Parkinson’s disease B. Epilepsy C. Alzheimer’s disease D. Graves’ disease A) Oestrogen B) Cortisone C) Thyroxin D) Insulin Q.284 Hormones A) Act as coenzyme C) Act as enzyme B) Influence synthesis D) Regulate metabolic reaction Q.285 The cell body or soma _is main part of the nerve cell A) Functional B) Nutritional C) Structural D) Active - ¢d Q.286 Which is the center of reflex movements related to eyes GEntiabrain B) Cerebellum C) Pons D) Thalamus Q.287 Aeirsie collection of neurons B) Concentration of dentrites of neurons @Bundles of axons or dentrites of neorons D) Bundles of axons or dentrites of neurons bounded b Q.288 Which is not related to others? A) Cretinism C) Myxedema Q.289 Resting membrane potential is A) -0.07 volts C) -0.007 volts i Q.290 Which of the following system rel: 1 S to skeletal muscles? A) Somatic neural system arasyl eural system —_ B) Sympathetic neural system ic ne : : Q.291 Neuror(is a> stru parts and axon. A) Macroscopic, dendrites ic, q . Microscopic, dendri ; , Q.292 When a neuron i: 2 not conducting any impulse, the axonal membrane onnective tissue D) Diabetes mellitu C) Comparativ Kti ions @nigear! Wapermeable to Nat ions. D) Comparatively more p Q) nee ions and, nearly impermeable to K+ ions. Q.293 The potential differe restii embrane is negatively charged. This is due to - differential distribution e following’ ke. _ A) Na* and K* ions . C)CO™ and CF ions \ B) Ca** and Mg** ions “D).Ca™t and CI ions Q.294 Which of the following prevents the fall of fruits? A) GA3 j B)N C) Ethylene y D) Zeatin (Cytokinin) Q.295 Which of the following hormones can replace vernalisation? A) Ethylene \ B) Cytokinins C) Gibberellins _D) Auxins Q.296 Some of the aro regulators affect stomatal opening. Closure of stomata is brought about by — A) Abscisic aéid j B) Gibberellic acid C) Auxin | d Indole butyric acid Q.297 In spinal cord of f humans, the vat is shaped. A) Circular B) Irregular (© Butterfly D) Longitudinal Q.298 Resting axonal membrane is —_ A) Unpolarized de Q C) Unpolarized and more permeable to. Kk B) Polarized and more permeable to Na* (@yPolarized and more permeabléto Q.299 Right and left cerebral hemispheres are connected via A) Corpus striatum (G>)) Corpus callosum C) Thalamus D) Hippocampus Q.300 Forebrain consist of A) Cerebrum B) Thalamus —— C) Hypothalamus CDA of these Q.301 The major coordinating centre for sensory and motor signaling is A) Thalamus “B) Hypothalamus — C)Medulla D) Pons Q.302 Which one of the following is a naturally occurring growth inhibitor? A) IAA B) NAA C) ABA D) GA Q.303 Hormone responsible for senescence A) ABA B) GA C) Auxin D) Cytokinin Q.304 Which of the following plant hormone substitutes for long photoperiod in flowering plants? A) Auxin B) Cytokinin C) Gibberellin D) Ethylene Q.305 Which of the following is responsible for apical dominance? A) GA3 B) ABA C) IAA D) Florigen Q.306 Auxin inhibits the growth of A) Apical buds C) Lateral axillary buds B) Parthenocarpic development of fruits D) Roots of cuttings Q.307 Hypothalamus contain the brain centre which controls the A) Body temperature C) Urge for eating B) Urge for drinking D) All of these Q.308 Which of the following is true about hypothalamus? A) Situated at the base of thalamus C) It contains B) Contains neurosecretory cell D) All of these Q.309 The part of brain located between the thalamus, hyp known as A) Mid — brain C) Limbic system Q.310 Chemicals called i n of impulses at chemical synapse. A) Neurohormones B) Neurotransmitters Q.311 Na/K pumps transports A) 3Na* out for 2K* in B) 2Na‘ out for 3K* i out” for thermoregulation s of forebrain and pons is A) Different of, : i V/ C) Impermeab d protein presenti in axoplasm. Q.313 Depolarization occurs d 7 A) Influx of Na* B) xX Me ~ C) Influx of K* D)E f K* Q.314 Unidirectional transmission of the nerve. i Ise is maintained by ._A) Interneurons \ B))Synapse ©) Myelin sheath — ‘D) Membrane polarity Q.315 In reflex action, the reflex arc is formed by A) Muséle, receptor, brain C) Brain, spinal cord, muscle B) Receptor, spinal cord, muscle D) Receptor, muscle, spinal cord Q.316 Which of the following PGR i is widely used as herbicide? A) Auxin \ _C) Cytokinins B) Gibberellic acid ... <=" D) All of these Q.317 Auxin 2, 4 —D isused for what? A) To remove weeds from farms by formers C) To induce flowering in horticulture B) To remove weeds from lawn by gardeners D) All of these Q.318 Following are’ the functions of insulin except A) Glycogenesis C) ft Glucose utilization by adipocyte B) ¢ Glucose utilization by hepatocyte D) Gluconeogenesis Q.319 Different types of gibberellins is reported from what kind of organisms? A) Fungi B) Higher plants C) Both A) and B) D) Protists Q.320 The name ‘Auxin’ was given to which chemical? A) Indole — 3 — acetic acid C) Indole — 6 — acetic acid B) Indole — 3 — butyric acid D) Indole — 6 — butyric acid Q.321 What prevents the fruit and leaf to drop in early? A) ABA B) IAA C) NAA D) Both B) and C) Q.322 What promotes the abscission of older mature leaf? A) Abscisic acid B) Auxin C) Ethylene D) Cytokinin’s Q.323 One of the synthetic auxins is: A) IBA B) NAA C) IAA D)GA D) Medullated-and-non-medullated nerves — Q.340 Which of the following is NOT an effect produced by parasympathetic stimulation? A) Dilation of the pupils C) Increased stomach activity B) Increased saliva production D) Constriction of the bronchi pawasyra@atlnene sn Q.341 Synaptic vesicles are present: A) Within the presynaptic knob C) Within the postsynaptic knob B) In the synaptic cleft D) In all of them Q.342 Cell bodies of sensory neurons constitute: A) dorsal root ganglion C) ventral root ganglion B) dorsal root D) posterior root ganglion Q.343 gWhich of the following is common to all neurones? ) a cell body which contains a nucleus C) presence of nodes of ranvier ) a thick myelin sheath D) presence of schwann cells Q.3 he chief morphological and physiological unit of the nervous system is the: A) Ganglion B) Neuron C) Reflex D) Synapse Q.345 The groups of ribosomes present in the cell body o ‘on, Which are associated with rough endoplasmic reticulum, are called: Meissner's corpuscles Nissl's granules Q.346 A nerve impulse is a wave of electr i veling along the length of the neuron involving chemical reactions and A) Synapse ~ C) Cell membrane Q.347 The mammalian forebrain lamus, limbic system and the: A) Cerebellum 4 : C) Hippocampus Q.348 The number o A) 12 C)31 Q.349 Neurotransmitte A) Axon ending C) Cell body, B; tic cleft Q.350 The movement of the ne Capea ( § A chemical event ical event A physical event iological event re Q.351 Cerebellum of brain is concerned ike | A) Balancing during sitting i