Nervous system of animals

 

           #Nervous system of animals 

For Neet, UPSC,BPSC and other General Compititions  

       

1. In the axons, the nerve impulse travels

(a) Towards the cells body

(b) Away from the cell body

(c) Away from synapse

(d) In both directions.

2. The thermoregulatory centre in the body is

(a) Spinal cord

(b) Hypothalamus

(c) Cerebellum

(d) Pituitary.

3. The site from which the nerve impulse for hearing originates

(a) Ear ossicles

(b) Cochlea

(c) Auditory nerve

(d) Ear-drum.

4. Which is true about conduction of nerve pulse at first phase?

(a) Na+ moves in, K + moves out 

(b) Na+ moves out, K+ moves in 

(c) Both move in

(d) Both move out.

5. A person feels no sensation when he puts his  hand overflame, the part of the brain which has damaged is -

(a) Cerebellum 

(b) Medulla oblongata 

(c) Diencephalon 

(d) Hypothalamus 

6. In a resting nerve, which is true?

(a) 3 Na+ are pumped in and 2 K+ pumped out

(b) 3 Na+ are pumped out for every 2 K+ pumped in

(c) There is no Na+- K + pump

(d) Na-K pump stops working.

7. Number of cranial nerves in camel is

(a) 10

(b) 11

(c) 12

(d) 14.

8. Which is activated in stress condition?

(a) Somatic

(b) Sympathetic

(c) Parasympathetic

(d) Whole ANS.

9. Acetyecholine helps in 

(a) Synaptic transmission 

(b) Synaptic delay

(c) Membrane permeability

(d) None of these.

10. Which of the following is a motor nerve?

(a) Abducens

(b) Auditory

(c) Vagus  

(d) Facial.

11. Who has worked on conditioned reflex?

(a) Darwin

(b) Pavlov

(c) Cramer

(d) Lamarck.

12. Chemical transmission of nerve impulse from one neuron to another neuron or from a neuron to muscles is by

(a) Cholesterol

(b) Cholecystokinin

(c) ATP

(d) Acetylcholine.

13. Which ion produces action potential in a nerve fibre?

(a) K+

(b) Cl-

(c) Na+

(d) Ca++.

14. Nerve fibres of dorsal root of spinal nerves are

(a) Motor or efferent

(b) Mixed

(c) Sensory or afferent

(d) None of these.

15. Stimulation of sympathetic nervous system cause

(a) Increased sweat secretion

(b) Increased tear secretion

(c) Decreased salivary secretion

(d) All of these.

16. Process of transmission of nerve impulse is

(a) Chemical

(b) Physical

(c) Biological

(d) Mechanical.

17. An inhibitory neurohumor is

(a) Glycine

(b) Acetylcholine

(c) Dopamine

(d) Norepinephrine.

18. Two extra cranial nerves found in rabbit/ human are

(a) Hypoglossal and spinal accessory

(b) Hypoglossal and pneumogastric

(c) Spinal accessory and glossopharyngeal

(d) Hypoglossal and glossopharyngeal.

19.Body coordination is maintained by

(a) Circulatory system

(b) Nervous system

(c) Endocrine system

(d) Both (b) and (c).

20. Voluntary muscular coordination is under control of 

(a) Cerebellum

(b) Medulla oblongata

(c) Hypothalamus

(d) Cerebral hemispheres.

21. The substance at synapse for conduction is

(a) Colistocene

(b) Acetylcholine

(c) Steroids

(d) None

22. Which of the following are motor nerves?

(a) Trochlear and trigeminal

(b) Trochlear and vagus

(c) Abducens and auditory

(d) Trochlear and abducens.

23. Which of the following cranial nerve is not found in frog?

(a) Trochlear

(b) Vagus

(c) Facial

(d) Spinal accessory.

24. The nature of action potential on the outer surface of plasma membrane

(a) -ve

(c) Neutral

(b) + ve

(d) None of these

25. If Ophthalmic branch of trigeminal cuts, what will be the effect?

(a) Frog dies

(b) Blindness

(c) Frog loses its capacity of sensing

(d) None of these

26. The fifth cranial nerve in Frog is named as the

(a) Glossopharynageal

(b) Trochlear

(c) Facial

(d) Trigeminal.

27. Parasympathetic nervous system 

(a) Increases heart beat

(b) Decreases heart beat

(c) Initiates heart beat

(d) Has no effect.

28. Which one of the following is an acquired reflex?

(a) Pavlov's dog salivation

(b) Peristalsis

(c) Courtship behaviour

(d) All of these

29. Vasomotor centre is innervated by

(a) Sympathetic only

(b) Parasympathetic only

(c) Both sympathetic and parasympathetic motor fibres

(d) None of these.

30. All the unconscious activities like heart beat, involuntary breathing and gut peristalsis are controled by

(a) cerebellum and medulla

(b) cerebrum and medulla

(c) cerebrum and cerebellum

(d) Medulla oblongata only.

31. Rhabdome is found in the eyes of

(a) Insects

(b) Annelids

(c) Rabbit

(d) Frog.

32. Jacobson's organ is

(a) Olfactory

(b) Auditory

(c) Chemoreceptor

(d) Algesi receptor.

33.Saltatory conduction of nerve impulse takes place through

(a) Myelinated nerve fibre

(b) Non myelinated nerve fibre

(c) Grey fibres

(d) None of these.

34. Which of the following is a spinal nerve?

(a) Trigeminal

(b) Olfactory

(c) Hypoglossal

(d) None of these.

35. Conditioned reflexes are different from unconditioned reflexes in that

(a) Conditioned reflexes are under PNS

(b) Unconditioned reflexes are under ANS

(c) Unconditioned reflexes are limited to brain

(d) Conditioned reflexes are limited to brain.

36. Which of the following acts as inhibitory neurotransmitter?

(a) Epinephrine

(b) GABA

(c) Acetylcholine

(d) Histamine.

37. Which of the following pairs of elements/ions are required for conduction of nerve impulses ?

(a) Na+ and K+

(b) Mg++ and K+

(c) Na+ and Mg++

(d) Ca++ and Mg++

38. Which of the following is not strictly considered a part of neuron? 

(a) Nissl's bodies

(b) Myelin sheath

(c) Axon

(d) Dendrites.

39. Which of the following cranial nerves is absent in frog?

(a) Trochlear

(b) Trigeminal

(c) Glossopharyngeal

(d) Hypoglossal.

40. Which of the following cranial nerves in frog innervates skin, upper jaw and lower jaw?

(a) Trochlear

(b) Trigeminal

(c) Facial

(d) Glossopharyngeal.

41. Which of the nerves functions like a tract of brain than a nerve ?

(a) Trigeminal

(b) Abducens

(c) Glossopharyngeal

(d) Vagus.

42. Lens of eye and retina are developed from

(a) Ectoderm

(b) Mesoderm

(c) Endoderm

(d) Ecto-mesoderm.

43. Organ of Corti is found in

(a) Internal ear

(b) External ear

(c) Both of these

(d) None of these.

44. Breathing is controlled by which part of the brain ?

(a) Lungs

(b) Trachea

(c) Medulla oblongata

(d) Hypothalamus.

45. The brain depends upon blood for supply of 

(a) ATP and glucose

(b) Oxygen and ATP

(c) Glucose and oxygen

(d) Oxygen and electrolytes.

46. Cerebellum is important in controlling 

(a) Stereognosis

(b) Muscle strength

(c) Stretch reflexes

(d) Muscular coordination.

47. The neurotransmitter between a motor and a muscle cell is 

(a) Serotonin

(b) Acetylcholine

(c) Dopamine

(d) Endophin.

48. In frog, fenestra ovalis is 

(a) opening in auditory capsule which separates middle ear and internal ear

(b) Air-filled cavity of middle ear

(c) Communication between middle ear and tympanic cavity

(d) External opening of tympanic cavity which is covered by tympanum.

49. The glial cells that form the blood-brain barrier by lining blood capillaries are

(a) Oligodendroglial cells

(b) Astrocytes 

(c) Schwann cells

(d) Ranvier cells.

50. Which of the following is a structure in the mesencephalon?

(a) Inferior colliculus

(b) Cerebellum

(c) Thalamus

(d) Mamilliary body

51. The structure in human that provide balance are located in the

(a) Outer ear

(b) Middle ear

(c) Inner ear

(d) Eustachian tubes.

52. Action potential of a nerve cell is created by

(a) Ca++

(b) K+

(c) Na+

(d) Cl-

53. Sensation of hearing is produced as a result of

(a) Presence of helicotrema

(b) Vibrations set in external ear

(c) Vibration of ear ossicles

(d) Nerve impulses generated by the hair cells of the organ of corti.

54. In hypermetropia, the image in the eyes is formed

(a) Behind the lens

(b) Behind the retina

(c) Before the lens

(d) Before the retina.

55. Acetycholinesterase is connected with

(a) Synthesis of proteins

(b) Digestion of proteins

(c) Digestion of polypeptides

(d) Conduction of nerve impulse.

56. Which part of the eye controls the amount of light entering it?

(a) Cornea

(b) Ciliary body

(c) Iris

(d) Suspensory ligament.

57. Scala vestibuli is connected with

(a) Scala media

(b) Seala tympani

(c) Fenestra rotumdus

(d) Fenestra ovalis.

58. Fovea centralis of retina perceives

(a) Diffused light

(b) Dim light

(c) Coloured light

(d) Coloured and dim light.

59. Node of Ranvier can be seen in

(a) Cyton

(b) Axon

(c) Dendrites

(d) Dendrons.

60. Which is correct about human brain?

(a) It is covered by two membranes

(b) There is no blood-brain barrier

(c) Cerebral cortex is highly developed

(d) None of these.

61. Body coordination is exhibited by

(a) Blood vascular system

(b) Nervous system

(c) Endocrine system

(d) Neuroendocrine system.

62. The name of nervous band connecting the cerebral hemispheres in rabbit is

(a) Corpus albicans

(b) Corpus callosum

(c) Corpus striatum

(d) Corpus spongiosum.

63. Lateral ventricles are found in

(a) Mammalian heart

(b) Amphibian brain

(c) Circulatory system of earthworm

(d) Internal ear of mammals.

64. What is found in the periphery of spinal cord?

(a) Grey matter

(b) White matter

(c) Notochord

(d) Myelinated nerve.

65. The potential difference between outside and inside of a nerve before excitation is known as

(a) Spike potential

(b) Reaction potential

(c) Action potential 

(d) Resting potential

66. The thermoregulatory centre in the body of man is found in

(a) Diencephalon

(b) Hypothalamus

(c) Pituitary

(d) Skin.

67. Heart is innervated by

(a) Trigeminal

(b) Vagus

(c) Facial

(d) Oculomotor.

68. The receptors present in the muscles, tendons and joints are called

(a) Teloreceptors

(b) Proprioreceptors

(c) Interoreceptors

(d) None of these.

69. When the intensity of light is low during the night, the light is detected by

(a) Rods

(b) Cones

(c) Lens

(d) Both rods and cones.

70. Corpus callosum is found in

(a) Rabbit

(b) Ascaris

(c) Frog

(d) Toad.

71. Colour blindness results from

(a) Absence of rods

(b) Absence of cones

(c) Absence of iris

(d) Absence of cornea.

72. Parasympathetic nervous system

(a) Increases heart beat

(b) Decreases heart beat

(c) Heart beat remains unchanged

(d) Initiates heart beat.

73. The nerves are supplied into visceral organs by which nervous system and of what type?

(a) Sympathetic nervous system, involuntary

(b) Parasympathetic nervous system, involuntary

(c) Sympathetic and parasympathetic ner- vous system, involuntary

(d) Sympathetic and parasympathetic ner- vous system, voluntary.

74. All functions of body are regulated and integrated by

(a) Respiratory system

(b) Neuroendocrine system

(c) Digestive system

(d) Nervous system.

75. Otoliths are formed of

(a) Calcium carbonate

(b) Calcium oxalate

(c) Magnesium carbonate

(d) Magnesium sulphate.

76. Which cell types does not divide is mammals after birth?

(a) Bone cells 

(b)Muscle cells

(c) Nerve cells

(d) Germ cells.

77. Which cranial nerve in mammals have maximum branches?

(a) Trigeminal nerve

(b) Abducens

(c) Facial nerve

(d) Vagus nerve

78. If the parasympathetic nerve supply to the heart is cut off, the heart beat will

(a) Increase

(b) Decrease

(c) Remain unchanged

(d) Stop.

79. What is the benefit of saltatory conduction over nerve propagation in non mylinated fibers ?

(a) More speed

(b) Less Na+/K+ pumps needed

(c) Less energy needed

(d) All of the above.

80. Brain originates from

(a) Endoderm

(b) Mesoderm

(c) Ectoderm

(d) Ecto-mesoderm.

81. Nerve impulse is a process which is biochemically

(a) Electric

(b) Chemical

(c) Electrochemical

(d) Physical

82. Simple two neurons reflex are involves

(a) Sensory neurons

(b) Spinal cord

(c) Effector neurons

(d) All of these.

83. In mammals sound receptors are

(a) Eyes

(b) Ears

(c) Hair

(d) Skin.

84. The third ventricle lies in

(a) Medulla oblongata

(b) Midbrain

(c) Diencephalon

(d) Cerebrum.

85. The nerve supplied to diaphragm is

(a) Vagus

(b) Phrenic

(c) Trigeminal

(d) Glossopharyngeal.

86. The largest cranial nerve is

(a) Vagus

(b) Olfactory 

( c) Hypoglossal

(d) Glossopharyngeal.

87. The centre for sense of smell in brain is

(a) Cerebellum 

(b) Cerebrum

(c) Midbrain

(d) Olfactory lobes.

88. The main function of cerebellum is

(a) Vision

(b) Hearing

(c) Balancing

(d) Memory.

89. Corpus callosum is a bridge of nerve fibres which connects

(a) Two cerebral hemispheres

(b) Two cerebellar hemispheres

(c) Cerebrum to cerebellum

(d) None of these.

90. Heart is innervated by

(a) Trigeminal

(b) Vagus

(c) Glosspharyngeal

(d) Facial.

91. Apolar nerve cells are found in

(a) Brain

(b) Retina

(c) Vertebrate's embryo

(d) Cochlea.

92. Which of the following animals has a false nervous system but no brain ?

(a) Hydra

(b) Amoeba

(c) Cockroach

(d) Earthworm.

93.Which one of the following pairs is of motor nerves?

(a) Trochlear and abducens

(b) Trochlear and optic

(c) Abducens and sensory

(d) Trochlear and trigeminal.

94.During resting condition, the membrane of axon is 

(a) Impermeable to Na+ and K+

(b) Permeable to Na+ and K+

(c) More permeable to K and Na+

(d) Less permeable to K+ and Na+

95. Nerve leading to CNS are called

(a) Afferent nerve

(b) Efferent nerve

(c) Motor nerve

(d) All of these.

96. Anterior enlargement of spinal cord is known as

(a) Filum terminate

(b) Cervical swelling

(c) Conus terminate

(d) Cauda equina,

97. Release of gastrointestinal secretion and movement after ingestion of food is brought about

(a) Sympathetic nervous system

(b) Parasympathetic nervous system

(c) Central nervous system

(d) All of these.

98. Proprioreceptors are.

(a) Internal sense organs

(b) Organs of taste

(c) Organs of smell

(d) Pain.

99.Nerve impulse initiates with the movement of 

(a) Na+

(b) K+

(c) Ca++

(d) Mg++.

100.Man has ............. pairs of spinal nerves.

(a) 35

(b) 30

(c) 31

(d) 32.