Nervous system

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1. Why do neurones have fatty sheaths?

  • So neurones don't get too close together
  • So the axon's of the neurones don't get tangled together
  • So electrical impulses don't cross over
  • So electrical impulses get to the second neurone faster
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Other questions in this quiz

2. Which type of neuron carries impulses away from organs?

  • Sensory neurones
  • Receptors
  • Motor neurones
  • Relay neurons

3. What happens when an impulse reaches a neurone?

  • The neurones bind together
  • It sets off the effector
  • It triggers the release of transmitter substances
  • It sends information to the next neurone

4. Which part of the neurone carries the nerve impulse?

  • Branching dendrites
  • Axon
  • Nucleus
  • Sheath

5. How do the neurones connect in a spinal reflex?

  • Sensory > Relay > Motor
  • Sensory > Motor > Relay
  • Relay > Sensory > Motor
  • Relay > Motor > Sensory
  • Motor > Sensory > Relay
  • Motor > Relay > Sensory

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