2.89: Understand the Role of Neurotransmitters at Synapses

SYNAPSE: Junction that separates Neurons from other cells (other Neurons and Receptor or Effector cells)

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• As electrical impulses cannot pass across the Synapse, Neurons transmit information across by converting the electrical signal into a chemical signal called Neurotransmitters

NEUROTRANSMITTERS: Chemical messengers that are released from Neurons to transmit signals across the Synapse

ROLE OF NEUROTRANSMITTERS:

SYNPATIC TRANSMISSION

Diagram showing the Process of Synaptic Transmission

EXPLANATION: When an electrical impulse reaches the end of an Axon on pre-synaptic Neuron, this triggers the release of chemical messengers called Neurotransmitters via exocytosis Neurotransmitter will diffuse across the Synapse and bind to receptors on the membrane of the post-synaptic Neuron As a result, post-synaptic Neuron continues to transmit electrical impulse along Axon of Neuron