091808homework

091808homework - Homework due 9/18/08 Name _ 1. What...

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Homework due 9/18/08 Name __________________________________ 1. What determines whether a neurotransmitter is excitatory or inhibitory? Can a particular neurotransmitter be both excitatory and inhibitory? Explain. 2. Which neurotransmitter is the principal excitatory neurotransmitter in the CNS? Which neurotransmitter is the principal inhibitory neurotransmitter in the CNS? What is a major excitatory neurotransmitter in the PNS (that excites muscles to contract)? 3. By what mechanisms are the actions of a neurotransmitter on the postsynaptic receptor terminated? Explain differences between small (AA and modified AA) and large (peptide) neurotransmitter molecules. 4. How are new small synaptic vesicles generated 5. Why does a given small synaptic vesicle have an affinity for taking up a specific type of neurotransmitter? 6. Although there are also other proteins in the membranes of synaptic vesicles, can you name three that we've mentioned in class that are critical for the proper functioning of small synaptic vesicles?
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7. What is an autoreceptor? What does it do? Why is that important?
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091808homework - Homework due 9/18/08 Name _ 1. What...

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