Synaptic Transmission

• What is a synaptic cleft? 


  where the neurons do not touch and is separated by a narrow gap
• What is the presynaptic neurone? 


  the axon terminal membrane of the neuron carrying the impulse to the synapse.
• What is postsynaptic membrane? 


  the membrane of the cell body or dendrite or the neuron carrying the impulse away from the synapse.
• What are neurotransmitter?

  they are the chemical molecules used by the nervous system to transmit messages between neurons, or from neurons to muscles
• What is the axon terminal?

  When the nerve impulse reaches the dendrites at the end of one axon.
• What does the threshold level mean? 


  the point at which increasing stimuli trigger the generation of an electrical impulse.
• What does a reflect arc need?

  Atleast two neurones