Neurones

• How do neurones communicate with each other?

  Neurones communicate via synapses, which are gaps between them
• What are nerve cells called?

  Neurones
• What is the function of neurones?

  They carry an electrical message or impulse when stimulated
• What is a bundle of neurones called?

  A nerve
• What are the three main types of neurones?

  • Sensory neurones: Carry impulses from receptors to the CNS
  • Motor neurones: Carry impulses from the CNS to effectors
  • Relay neurones: Connect sensory and motor neurones within the CNS
• What is the structure of a neurone?

  A neurone has a long fibre (axon) insulated by a myelin sheath and tiny branches (dendrons) that receive incoming impulses
• What is the nervous system adapted to do?

  To react to our surroundings and coordinate our behaviour
• How does the nervous system send information rapidly?

  It uses electrical and chemical signals
• What is the nervous system made of?

  Nerve cells which are called neurons
• What are neurones?

  Specialised cells which can carry electrical impulses along their thin cytoplasm, which is called an axon
• What are the three main forms of neurones?

  -Sensory neurone

  -Relay neurone

  -Motor neurone
• What are the coordinators for the nervous system?

  The brain and the spinal cord
• What is the central nervous system?

  Brain and spinal cord
• What is the central nervous system responsible for?

  Coordinating all the sensory information around you, all your thoughts and maintaining all your internal systems
• What is the gap between where a nerve ends and joins to another called?

  A synapse
• What happens to the electrical signal at the synapse?

  It is transferred into a chemical signal that diffuses across the gap
• Why is the synapse important?

  It allows the nervous system to direct the signal to the right location
• What are neurons?


  Cells in the brain that communicate through electrical and chemical signals
• What do the three types of neurones form? 


  a circuit