Diagram + Labels

• What is this?

  Structure of a neurone

  
• What does the blue label show?

  Cell body

  
• What does the green label show?

  Myelin sheath

  
• What does the yellow label show?

  Dendrites

  
• What does the black label show?

  Long axon

  
• What does the axon do?


  Carries information across the body
• What does the myelin sheath do?


  Insulates and speeds up nerve impulses.
• What are the axons coated in?


  Myelin Sheaths
• What are myelin sheaths?


  Insulating layers of fat
• What do myelin sheaths prevent?


  Short circuits e.g. the electrical current cannot pass on to other neurones from different circuits
• What is the cell body?


  the main part of a neuron that contains the nucleus and lots of dendrons and dendrites extending from it
• What are dendrons?


  Branching extensions of a neuron that receive incoming signals.
• What are dendrites?


  Branch-like structures on a neuron that receive signals from other neurons.
• What are synapses?


  A gap between neurones
• What releases when electrical impulses reach the synapse?


  Neurotransmitters