HBSE Class 11 Biology On Central Nervous System Multiple Choice Questions

by

Question 1. The Nerve Fibres that conduct Impulses From The Peripheral To The Central Nervous System Are Called :

  1. Motor Nerve Fibres
  2. Mixed Nerve Fibres
  3. Afferent Nerve Fibres
  4. Efferent Nerve Fibres.

Answer: 3. Afferent Nerve Fibres

Question 2. The Nerve Fibres that carry Impulses From The Central Nervous System To The Muscles And Glands For Contraction And Secretion Are Called:

  1. Efferent Nerve Fibres
  2. Afferent Nerve Fibres
  3. Mixed Nerve Fibres
  4. Sensory Nerve Fibres.

Answer: 1. Efferent Nerve Fibres

nervous system questions

Question 3. When Sympathetic System Acts On A Particular Organ, Its Action Is :

  1. Stimulated
  2. Inhibited
  3. Transmitted
  4. Regulated.

Answer: 4. Regulated.

HBSE Class 11 Biology On Central Nervous System Multiple Choice Questions

HBSE Class 11 Biology Central Nervous System

Question 4. The Simplest Form Of Nervous System That integrates rates of Body Activities Is Found In Cnidarians And Called :

  1. Nerve Trunk System
  2. Nerve Net System
  3. Ladder System
  4. Nerve Cord System.

Answer: 2. Nerve Net System

questions about nervous system

Question 5. Excitability And Conductivity Are The Outstanding Properties Of:

  1. Arteries
  2. Veins
  3. Neurons
  4. Nephrons.

Answer: 3. Neurons

Question 6. Dendrites Transmit The Impulses To :

  1. The Body Of Cell
  2. The Neurilemma
  3. The Myelin Sheath
  4. The Axon Only.

Answer: 1. The Body Of Cell

Question 7. Resting Potential Of Nerve Cells Is :

  1. -90 Mv
  2. -70-90 Mv
  3. -120 Mv
  4. -60 M V.

Answer: 2.  -70-90 Mv

Question 8. Nerve Is:

  1. Group Of Nerve Fibres Bounded Together By Connective Tissue
  2. Group Of Nerve Fibres Bounded By A Membrane
  3. A Group Of Neuron Only
  4. None Of The Above.

Answer: 2. Group Of Nerve Fibres Bounded By A Membrane

questions about the nervous system

Question 9. Myelinated Fibres Are Nerve Fibres that are:

  1. Without Any Surrounding Sheath
  2. With A Surrounding Sheath
  3. Without Axon
  4. None Of The Above.

Answer: 2. With A Surrounding Sheath

Question 10. During Synaptic Transmission Of Nerve Impulse, Neurotransmitter (P) Is Released From Synaptic Vesicles By The Action Of Ions (Q). Choose The Correct P And Q.

  1. P = Acetylcholine, Q = Ca–+
  2. P = Acetylcholine Q = Na+
  3. P = Gaba, Q =Na+
  4. P = Cholinesterase, Q = Ca++.

Answer: 3. P = Gaba, Q =Na+

Central Nervous System Class 11 Notes

Question 11. The Transmission Of Nerve Impulse Is A :

  1. Mechanical Process
  2. Biological Process
  3. Electrochemical Process
  4. Physical Process.

Answer: 3. Electrochemical Process

Question 12. The Potential Difference’betwecn Inside And Outside Of A Neuron Before Excitation Is Known As :

  1. Resting Potential
  2. Action Potential
  3. Spike Potential
  4. Reaction Potential.

Answer: 1. Resting Potential

Question 13. What Is The Difference Between The Conduction Of Electricity Through An Electric wire And That Of Nerve Impulse Through A nerve fibre

  1. Nerves Are Living
  2. Electricity Provides A Shock
  3. Nerve Impulse Is Sell Generated On Stimulation And Propagated
  4. All The Above.

Answer: 3. Nerve Impulse Is Sell Generated On Stimulation And Propagated

central nervous system test

Question 14. When Nene Is Stimulated, It Is Polarized. DepolarizaTion Is Maintained By The Following Ion :

  1. Ca++
  2. Cl–
  3. Mg++
  4. Organic Compounds, K+ And Na+.

Answer: 4. Organic Compounds, K+ And Na+.

Question 15. During Resting Conditions The Membrane Of the Axon Is :

  1. Impermeable To Na+ And K+ Ions
  2. Permeable To Both Na+ And K+ Ions
  3. More Penncable To K+ Than Na+ Ions
  4. More Permeable To K+ And Cl– Ions.

Answer: 3. More Penncable To K+ Than Na+ Ions

Question 16. The Tire Part Of Ommatidium That Is Functionally Similar To the Retina Is :

  1. Crystalline Cone
  2. Basement Membrane
  3. Rhabdome
  4. Vitrellae.

Answer: 3. Rhabdome

nervous system test

Question 17. The Simplest Form Of Nerve Network Is :

  1. Neuron
  2. Reflex Arc
  3. Peripheral Nervous System
  4. Autonomic Nervous System.

Answer: 2. Reflex Arc

Structure and Function of Central Nervous System

Question 18. The Chemical Theory Of Transmission Attributes The Response Of Postsynaptic Cells To A Chemical Substance Released From:

  1. Axon
  2. Synapse
  3. Pre-Synaptic Nerve Terminal
  4. Dendrites.

Answer: 3. Pre-Synaptic Nerve Terminal

Question 19. Acetylcholine Is Most Closely Associated With Which Of The Following Systems?

  1. Autonomic Nervous System
  2. All The Neurons Except Those Of Sympathetic Nervous System
  3. Parasympathetic Nervous System
  4. Peripheral Nervous System.

Answer: 2. A11 The Neurons Except Those Of Sympathetic Nervous System

Question 20. The Sensory Ganglion Concerned With Spinal Reflex Lies In:

  1. Anterior Root Of Spinal Nerve
  2. Anterior Hom Of Spinal Nerve
  3. Posterior Root Of Spinal Nerve
  4. Posterior Hom Of Spinal Cord.

Answer: 3. Posterior Root Of Spinal Nerve

Question 21. Sodium Pump Of An Axon Is Operative At:

  1. Action Potential Period
  2. Resting Potential Period
  3. Refractory Period
  4. None Of The Above.

Answer: 1. Action Potential Period

Question 22. The Gap Between the Terminal Knobs Of An Axon And Dendrites Of The Cell Body Of Another Axon Is Known As:

  1. Synaptic Cleft
  2. Synapse
  3. Neural Crest
  4. Tight Junction.

Answer: 1. Synaptic Cleft

Question 23. Acetylcholine Is :

  1. Secreted  By Nerve Cells In Synapse
  2. Produced By Liver
  3. A Delivery Enzyme
  4. Activates Enzymes.

Answer: 1. Produced By Liver

Question 24. Action Potential Is :

  1. Brief Change In Electric Charge
  2. Brief Change In Oxygen Concentration
  3. Brief Change In C02 Concentration
  4. Change In Direction Of Nerve.

Answer: 1. Brief Change In Electric Charge

Question 25. During the Refractory Period :

  1. Nerve Transmits Impulses Rapidly
  2. Nerve Transmits Impulses Very Slowly
  3. Nerve Never Transmits Impulses
  4. None Of The Above.

Answer: 3. Nerve Never Transmits Impulses

Brain and Spinal Cord Class 11 Biology

Question 26. Electrical Impulse Of The Eye Recorded Are :

  1. Encephalogram
  2. Electro-Cardiogram
  3. Electro-Retinogram
  4. None Of The Above.

Answer: 3. Electro-Retinogram

Question 27. Neurotransmitters Are Compounds That:

  1. Help In Transmission Of Impulse In Synapse
  2. Retard The Transmission Of Impulse In An Axon
  3. Retard The Transmission Of Impulse At Synapsis
  4. None Of The Above.

Answer: 1. Help In Transmission Of Impulse In Synapse

Question 28. The 3rd, 6th And 11th Cranial Nerves Are :

  1. Oculomotor, Trigeminal, Spinal
  2. Optic, Facial, Spinal
  3. Oculomotor, Abducens, Spinal
  4. Trochlear, Abducens, Vagus.

Answer: 3. Oculomotor, Abducens, Spinal

Question 29. Which Of The Following Cranial Nerves Is Present In Rabbit But Absent In Frog?

  1. Glossopharyngeal
  2. Hypoglossal
  3. Olfactory
  4. Optic

Answer: 2. Olfactory

Question 30. Nervous System Was, First Of All, Originated In :

  1. Leech
  2. Ascaris
  3. Hydra
  4. Tape Worm.

Answer: 3. Hydra

Question 31. Sympathetic Nerves In Mammals Arise From :

  1. Thoraco-Lumbar Nerves
  2. 3rd, 7th, 9th And 10th Cranial Nerves
  3. Sacral Nerves
  4. Cervical Nerves.

Answer: 1. Thoraco-Lumbar Nerves

Question 32. At The Nerve Synapse :

  1. Carbon Dioxide Is Released
  2. Oxygen Is Released
  3. Neuro-Transmitters Are Released
  4. Nothing Is Released.

Answer: 3. Neuro-Transmitters Are Released

Difference Between CNS and PNS

Question 33. At The Nerve Cell Membrane, The Equilibrium Potential For Potassium Is :

  1. + 65 M V
  2. +35m V
  3. -90 M V
  4. -70 M V

Answer: 3. -90 M V

Question 34. The “Spike” Phase Of Action Potential Lasts For Roughly :

  1. 20 Milli Second
  2. 2 Milli Second
  3. 200 Milli Second
  4. 2000 Milli Second.

Answer: 2. 2 Milli Second

Question 35.The Chemical Thcoiy Of Ti.Msmissiou Iillrilnitcs The Response Of Postsvnaptic Coll To A Chemical Substance Released Item :

  1. Axon
  2. Synapse
  3. Pre-Synaptic Nerve Terminal
  4. Dendrites.

Answer: 3. Pre-Synaptic Nerve Terminal

Question 36. One None Is Stimulated, It Is Polarized. Depolarization Is Maintained By The Following Ion :

  1. Ca+
  2. Cl–
  3. Mg++
  4. K+.

Answer: 4. K+.

Question 37. During Resting Conditions The Membrane Of the Axon Is:

  1. Impermeable To Na+ And K+ Ion
  2. Permeable To Both Na+ And K+ Ions
  3. More Penncable To K+ Than Na+ Ion
  4. More Permeable To K+ And Cl– Ions.

Answer: 3. More Penncable To K+ Than Na+ Ion

Question 38. Conduction Of Nerve Impulse Along A Myelinated Nerve Is :

  1. Twisted
  2. Reversible
  3. Saltatory
  4. Continuous.

Answer: 3. Saltatory

Question 39. Somaesthetic Area Is Located In :

  1. Frontal Lobe
  2. Mid Lobe
  3. Parietal Lobe
  4. None.

Answer: 3. Parietal Lobe

Question 40. The Ends Of Bipolar Neurons In Retina Of Man Touch :

  1. Choroid Layer And Ganglion Cells
  2. Photosensitive Cells And Ganglion Cells
  3. Cornea And Retina
  4. Blind Spot And Yellow Spot.

Answer: 2. Photosensitive Cells And Ganglion Cells

Question 41. Glands Of Swammerdam Are Rich In :

  1. Calcium
  2. Acetylcholine
  3. Dopamine
  4. Gonadotrophin.

Answer: 1. Calcium

Question 42. Sensory Neuron In A Vertebrate Reflex Are Located In :

  1. Grey Matter Of Spinal Cord
  2. White Matter Of Spinal Cord
  3. Ventral Root Ganglion
  4. Dorsal Root Ganglion.

Answer: 4. Dorsal Root Ganglion.

Question 43. Which One Of The Following Nerves Is Not Related To The Movement Of Eye Ball?

  1. Oculomotor
  2. Abducens
  3. Trochlear
  4. Glossopharyngeal.

Answer: 4. Glossopharyngeal.

Question 44. The Benzodiazepine Drug Known As Valium Produces Relaxation By Aiding The Binding To Receptor Proteins Of Inhibitory Neurotransmitters:

  1. Ach
  2. Gaba
  3. Dopamine
  4. Glycine.

Answer: 2. Gaba

Question 45. Which One Of The Following Is The Effect Of Parasympathetic Nervous System?

  1. Increasing Blood Pressure
  2. Secretion Of Digestive Juice
  3. Dilating Pupil
  4. Increasing Cardiac Output.

Answer: 2. Secretion Of Digestive Juice

Question 46. Which Of The Following Is the Function Of Pons Varolii?

  1. Site Of Cardiac Centre
  2. Perceiving Centre For Crude Sensation
  3. Controls Hunger And Thirst
  4. Transmits Impulses From One Side Of Ceubellum To The Other Side.

Answer: 4. Transmits Impulses From One Side Of Ceubellum To The Other Side.

Question 47. The Cervical Plexus Is Formed By

  1. Anterior Rami Of First Two Cervical Nerves
  2. Anterior Rami Of First Three Cervical Nerves
  3. Anterior Rami Of First Two Cervical And First Two Thoracic Nerves
  4. Anterior Rami Of Hist Four Cervical Nerves.

Answer: 4. Anterior Rami Of First Two Cervical And First Two Thoracic Nerves

Question 48. Presynaptic Membrane Permits :

  1. Influx Of Na+ Ions
  2. Influx Of Ca+3  Ions
  3. Influx Of Na+ And K+ Ions
  4. Start Of Original Impulse.

Answer: 2. Influx Of Ca+2 Ions

Question 49. Heart Beat Is Regulated By :

  1. Cns
  2. Ans
  3. PNS
  4. Spinal Cord.

Answer: 2. Ans

Question 50. Brain Reserves How Many Percent Of Total 02 Consumed By Body?

  1. 10%
  2. 20%
  3. 30%
  4. 40%.

Answer: 2. 20%

Question 51. The Refractory Centre Which Rfor Exampleulates Respiration Is Located In :

  1. Medulla Oblongata
  2. Cerebral Peduncle
  3. Vagus Nerve
  4. Cerebellum.

Answer: 1. Medulla Oblongata

Question 52. Which Brain Structure In Rabbit Is Directly Vision Related ?’

  1. Hippocampus
  2. Corpus Callosum
  3. Corpus Albicans
  4. Corpora Quadrigeminum.

Answer: 4. Corpora Quadrigeminum

Question 53. Most Of The Neurons Of Our Body Are :

  1. Unipolar
  2. Bipolar
  3. Pseudo-Unipolar
  4. Multipolar.

Answer: 4. Multipolar.

Question 54. Body Coordination Is Exhibited By :

  1. Blood Vascular System
  2. Nervous System
  3. Endocrine System
  4. Nervous And Endocrine System.

Answer: 4. Nervous And Endocrine System.

Question 55. The Sodium-Potassium Pump :

  1. Transports Na+ And K+ Out Of The Neuron
  2. Transports Na+ Into The Neuron And K+ Out
  3. Transports K+ Into The Neuron And Na+ Out
  4. Transports Na+ And K+ Into The Neuron.

Answer: 3. Transports K+ Into The Neuron And Na+ Out

Question 56. When A Neuron Shows A Stable Resting Potential, The Concentration Of Na+ Is :

  1. 10 Times Higher Inside The Cell Than Outside
  2. 10 Times Higher Outside The Cell Than Inside
  3. 30 Times Higher Inside The Cell Than Outside
  4. 30 Times Higher Outside The Cell Than Inside.

Answer: 2. 10 Times Higher Outside The Cell Than Inside

Question 57. In The Resting State Of The Neural Membrane, Diffusion Due To Concentration Gradients, If Allowed, Would Drive

  1. Na+ Into The Cell
  2. Na+ Out Of The Cell
  3. K+ Into The Cell
  4. K+ And Na+ Out Of The Cell.

Answer: 1. Na+ Into The Cell

Question 58. The Resting Potential Of Neurons Is  70 Mv. It Is Mainly Due To :

  1. Excess Of Chloride Ions Inside
  2. Excess Of Protein Ions Inside
  3. Na+ Ions Outside
  4. K+ Ions Inside.

Answer: 3. Na+ Ions Outside

Question 59. A Nerve Impulse Which Travels Through Nerve Fibre Only It Its Membrane Suddenly Becomes More Permeable To Ions Of:

  1. Chloride
  2. Potassium (K+)
  3. Sodium (Na+)
  4. Magnesium (Mg++).

Answer: 3. Sodium (Na+)

Question 60. An Action Potential, For A Given Axon, Is:

  1. Different In Size Each Time It Occurs
  2. Always The Same Size
  3. Larger When Information Has To Be Conveyed Faster
  4. Smaller When Information Goes To A Gland Rather Than  A Muscle.

Answer: 2. Always The Same Size

Question 61. Which Of The Following Increases When An Action Potential Is Initiated?

  1. Diffusion Of Sodium Ions Into The Neuron
  2. Diffusion Of Sodium Ions Out Of The Neuron
  3. Diffusion Of Potassium Ions Out Of The Neuron
  4. Diffusion Of Potassium Ions Into The Neuron.

Answer: 1. Diffusion Of Sodium Ions Into The Neuron

Question 62. When An Action Potential Abruptly Drops From Positive To Nfor Exampleative, This Is Because :

  1. Potassium Gates Are Inactivated And Sodium Gates Are Opened
  2. Sodium Gates Are Inactivated And Potassium Gates Are Opened
  3. Both Potassium And Sodium Gates Are Inactivated
  4. Both Potassium And Sodium Gates Are Opened.

Answer: 2. Sodium Gates Are Inactivated And Potassium Gates Are Opened

Question 63. A Nerve Impulse Leaves A Neuron Via :

  1. Dendrite
  2. Cyton
  3. Axon
  4. Nucleus.

Answer: 3. Axon

Question 64. Synapse Is A Gap Between Adjacent :

  1. Muscle Fibres
  2. Nerve Cells
  3. Nerve Cell Bodies
  4. None Of The Above.

Answer: 2. Nerve Cells

Question 65. A Nerve Which Conveys Impulses From A Tissue To Nerve Centre Is Called :

  1. Efferent
  2. Mixed
  3. Motor
  4. Afferent.

Answer: 4. Afferent.

Question 66. The “Spike” Phase Of The Action Potential Lasts For Roughly :

  1. 2 Milliseconds
  2. 20 Milliseconds
  3. 200 Milliseconds
  4. 2000 Milliseconds.

Answer: 1. 2 Milliseconds

Question 67. The Speed At Which Impulses Are Conducted Increases With :

  1. Increasing the Diameter Of The Soma
  2. Increasing the Diameter Of The Axon
  3. Increasing Number Of Dendrites
  4. Increasing Branching Of The Dendrites.

Answer: 2. Increasing the Diameter Of The Axon

Question 68. Saltatory Conduction Of Nerve Impulses Occurs In :

  1. A myelinated Fibres
  2. Myelinated Fibres
  3. Both A And B
  4. None Of The Above.

Answer: 2. Myelinated Fibres

Question 69. Synaptic Fatigue Is Due To :

  1. Exhaustion Of Neurotransmitter
  2. Release Of More Adrenaline
  3. Release Of More Acetylcholine
  4. None Of The Above.

Answer: 1. Exhaustion Of Neurotransmitter

Question 70. Secretion Of Parasympathetic Nerve Endings Is :

  1. Noradrenaline
  2. Glycine
  3. Acetylcholine
  4. Hydroxy-Triptamine.

Answer: 3. Acetylcholine

 

Leave a Comment