neurones

• types of neurones

  motor

  relay

  sensory
• label this diagram

  1. receptor cell
  2. dendron
  3. myelin sheath
  4. cell body
  5. axon

  
• label the diagram

  1. dendrite
  2. cell body
  3. axon

  
• label the diagram

  1. cell body
  2. nodes of ranvier
  3. schwann cells
  4. axon

  
• how do we detect a stimulus (4)

  1. receptors detect stimulus
  2. an electrical impulse is sent through a sensory neurone to the central nervous system
  3. cns processes data input and decides on a reaction. electrical impulses travel through relay neurones in the cns
  4. a new electrical impulse is generated in motor neurone sending messages to muscles or glands
• label the diagram

  1. Axon terminal
  2. Synaptic vesicle
  3. Transporter
  4. Neurotransmitter
  5. Synaptic cleft
  6. Receptor
  7. Post synaptic neuron

  
• Synaptic transmission (5)

  1. Electrical impulse arrives at axon terminal
  2. The synaptic vesicles release neurotransmitters into the synaptic cleft
  3. Neurotransmitters diffuse across the synaptic cleft and bund to a receptor
  4. Receptors stimulate a new electrical impulse in the post synaptic neurone
  5. Neurotransmitters are then broken down or reabsorbed for later use