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Unformatted text preview: 4. Explain how synapses can be either excitatory or inhibitory. 5. List the factors responsible for determining the magnitude and time-course of the postsynaptic response. III. Sample Problems. 1. Can a given neuron be both excitatory and inhibitory to postsynaptic cells? 2. What effect would applying an anticholinesterase at the synaptic cleft have on a post-synaptic cell? 3. What is the evidence for the quantal release of transmitter? 4. What is the role of Ca++ in the process of synaptic transmission and how can the amount of transmitter file:///C|/WINWORD/COURSES/31107/Lec10-07.htm (1 of 2)8/15/2007 10:16:56 AM Lec10 - 2007 released/action potential be regulated? 5. Define summation of synaptic activity in terms of ion flow and transmitter release. 6. What determines whether a synapse is excitatory or inhibitory? file:///C|/WINWORD/COURSES/31107/Lec10-07.htm (2 of 2)8/15/2007 10:16:56 AM...
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- Fall '08