Communication Between Neurons

Neurons are analog devices, not digital. The average neuron receives information from about 10,000 other neurons; the way in which this information is sent, and the way it is processed within neurons, are the focus of the next two Parts.

In this part, learning objectives are to:

1. Label the key features of a chemical synapse.
2. Name the steps in the packaging of neurotransmitters into vesicles.
3. Explain how vesicles are fused with the cell membrane to release neurotransmitter.
4. Describe the function of a ligand-gated channel.
5. Describe the function of a G protein-coupled receptor (GPCR).
6. Summarize the methods used by neurons to terminate neurotransmitter action.