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class VIII

Key Concepts

axon, nerve cell, impulses, neuron, dendrite

essential questions

1. How are nerve impulses transmitted?
2. How does our sense of taste and touch relate to the nervous system?


  1. The neuron cell is made up of which of the following parts? a) Axon b) Dendrite c) Nucleus    d) All of the above
  2. Name the two type of coordination which take place in a our body.
  3. Which nerves are attached to the brain and emerge from the skull? a) Cranial Nerves  b) Spinal Nerves  c) Thoracic Nerves  d) Sacral Nerves
  4. Name the system that controls every activity that you do? a) Nervous System  b) Exocrine System c) Endocrine System  d) Respiratory System
  5. What is the unit of Nervous system? a) Brain  b) Spinal Cord  c) Neuron d) Nerves
  6. In our body involuntary actions are controlled by: a) Medulla in Hindbrain  b) Medulla in Forebrain c) Medulla in Spinal Cord  d) Medulla in Midbrain
  7. Those reflex actions which involve brain are called: a) Stimulus b) Cerebral reflexes  c) Spinal reflexes  d) Reflex arc
  8. Pons, cerebellum and medulla are part of which brain? a) Forebrain  b) Midbrain  c)Hindbrain d) None of the above
  9. Spinal Cord originates from which part of the brain? a) Cerebellum  b) Medulla  c) Pons  d) Cerebrum
  10. The structural and functional unit of nervous system is a: a) Axon   b) Nephron  c) Neuron  d) Texon
  11. A ________ is a change in the external or internal environment that produces a physiological response in an organism (a) stimulus (b) impulse (c) receptor (d) effector
  12. The reactions shown by the organism is called (a) stimulus (b) response (c) impulse (d) all
  13. Chemical coordination is brought by chemical messengers called (a) vitamins (b) enzymes (c) hormones (d) none
  14. Our nervous system works by coordinating (a) Voluntary actions (b) involuntary actions (c) reflex actions (d) all
  15. Voluntary actions are controlled by the _______ (a) nerves (b) heart (c) brain (d) spinal cord
  16. ________ helps to think and remember (a) digestive system (b) Nervous system (c) circulatory system (d) endocrine system
  17. An ________ is a chemical disturbance (a) stimulus (b) response (c) impulse (d) all
  18. ________ is the structural and functional unit of nervous system (a) nephron (b) neuron (c) axon (d) Dendron
  19. The main part of neuron is (a) cyton (b) dendron (c) Axon (d) dendrite
  20. _______ is a long specialized process arising from other side of cyton (a) dendron (b) dendrite (c) Axon (d) cell body
  21. _______ is surrounded by myelin sheath (a) dendron (b) dendronite (c) cell body (d) axon
  22. Neurons carry impulses from the sense organs up to the brain or spinal card (a) sensory neuron (b) motor neuron (c) association neuron (d) none
  23. _______ carry impulses from brain and spinal cord to various organs and body parts (a) sensory neuron (b) motor neuron (c) association neuron (d) none
  24. _______ neurons transmit impulses from one neuron to another neuron (a) sensory (b) motor neuron (c) association neuron (d) none
  25. Brain is protected by membranous outer covering called (a) pericardium (b) peritoneum (c) meninges (d) none
  26. Brain is protected by a fluid called (a) pericardial fluid (b) cerebrospinal fluid (c) peritoneal fluid (d) amniotic fluid
  27. _________ is the largest part of brain : a) cerebrum  b) cerebellum  c) medulla oblongata d) cerebral hemisphere
  28. _________ is the smaller part of the brain :a) cerebrum b) cerebellum  c) medulla oblongata  d) spinal cord
  29. _________ helps to maintain the balance of the body: a) cerebrum  b) cerebellum  c) medulla oblongata d) spinal cord
  30. _________ connects the brain and the spinal cord: a) cerebrum  b) cerebellum c) medulla oblongata d) all
  31. There are ________ pairs of cranial nerves emerging from the brain: a) 12 b) 31  c) 2  d) 24
  32. There are ________ pairs of spinal nerves emerging from spinal cord  a) 31  b) 31  c) 2  d) 24
  33. Quick automatic response to certain kind of stimuli: a) Response  b) Reflex  c) stimulus  d) impulse
  34. Olfactory cells aid in the sense of: a) hearing b) smell c) touch  d) vision
  35. The brain and spinal cord are parts of the  nervous system: a) Peripheral  b)autonomic  c) central
  36. What nerve cells detect conditions in the body’s environment: a) Sensors b) neurons  c) synapses  d)receptors
  37. Which structure adjusts the size of the pupil? a) cornea b) retina c) lens d) iris
  38. Which best describes homeostasis? a) home to live in b) stable internal c) environment d) blood pressure  e) body temperature  f) b, c, and d  g)none of the above
  39. What is the largest part of the brain? a) Cerebrum b) frontal lobe  c)temporal lobe  d) spinal cord
  40. Which type of tissue is found in your brain? a) Nervous b) connective   c) epithelial  d) muscle


  1. The human nervous system is capable of a wide range of functions. What is the basic unit of the nervous system? a) Glial cell b)Meninges c) Neuron d)Cerebrospinal Fluid
  2. Neurons come in which different type(s)?  a) Sensory  b) Motor  c) Skeletal    d) a& b
  3. How do neurons communicate with one another? a) Electrically b) Chemically c) Through weak, radio wave like impulses d) a& b
  4. Nervous System consists of: (i) Brain   (ii) Spinal Cord  (iii) Spleen  (iv) Nerves
    Choose the correct Option: a) Both (i) and (ii)  b) Both (i) and (iii)  c) (i), (ii) and (iv)  d) (i), (ii) and (iii)
  5. A microscopic gap between a pair of adjacent neurons over which nerve impulses pass when going from one neuron to the next is called: a) Neurotransmitter  b) Synapse  c) Axon d) None of the above
  6. Medulla oblongata controls: a) smelling  b) beating of heart and respiratory system  c) Intelligence and will power  d) balancing the body
  7. Balance of the body is controlled by: a) Spinal cord  b) cerebellum  c) Cerebrum  d) medulla
  8. Scent has a direct and immediate effect on the  nervous system  a) central  b) peripheral
  9. Explain the structure of neuron.
  10. Differentiate between the following pair of terms:
    1. Stimulus and impulse
    2. Receptor and effector
    3. Motor nerve and sensory nerve
  11. Explain the PNS in detail.
  12. Explain the structure of a nerve
  13. What is reflex arc? Explain using a diagram
  14. What is Pavlov’s experiment and how does it show conditioned reflex.


  1. Why does alcoholic person walk clumsily?
  2. Why is it said that hitting a person behind the neck might kill him?
  3. The smell of good food causes watering of your mouth. It is a: a) Natural reflex   b) acquired reflex  c) inborn reflex  d) ordinary reflex
  4. External stimuli include (a) heat (b) dust (c) water (d) temperature
  5. Internal stimuli include (a) sensation of hunger (b) thirst (c) both a and b (d) light
  6. Why does the cerebral cortex have so many folds and bumps? A) They help to keep your brain in place if you get bumped hard  b) They give neurons more surface area without having to have a giant head  c) They allow your brain to spread out more as you get older and larger d) They mean your brain has too much knowledge stored in it


  1. Which of the following statement is correct about Cerebellum?
    (i) It is the largest part of the brain  (ii) It regulates the muscular movement for locomotion  (iii) It controls involuntary action  (iv) It is a part of brain. Choose the correct Option:  a) Only (i)  b) Both (ii) and (iii)  c) Both (ii) and (iv)   d) Only (iv)