Neurones

• What is an action potential?

  An electrical impulse that travels down the neuron
• What are the three types of neurone?

  • Sensory
  • Motor
  • Relay/intermediate
• What do sensory neurones do?

  Carry nerve impulses from sensory receptors to the CNS
• What is the structure of a sensory neurone?

  Short axon long dendrites
• What do relay neurones do?

  Transmit signals between motor and sensory neurones
• Where do relay neurones lie?

  Brain and spinal cord
• What is the structure of relay neurones?

  Short axon short dendrites
• What do motor neurones do?

  Transmit signals from CNS to effectors and control their contractions
• What is the structure of a motor neurone?

  Long axon short denrites