NervSys2(5)

NervSys2(5) - General Biology 10 I The Nervous System.4 A...

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General Biology 10I The Nervous System A Mitochondria (make A TP) B Synaptic vesicles of pre-synaptic neuron C Synaptic gap D Receptor sites on post-synaptic cell (neuron, muscle or gland ".... .4." "' . .... SYNAPTIC TRANSMISSION 1. Neurotransmitter is synthesized by the neuron from amino acids in diet. 2. Neurotransmitter is stored (packaged) in synaptic vesicles. 3. Each action potential releases neurotransmitter from vesicles into the synaptic gap. 4. Neurotransmitter molecules diffuse across the gap. 5. Neurotransmitter combines with receptor sites on the post-synaptic cell. 6. Sodium gates are opened in the post-s}llaptic cell, which fires ifdepolarization is > firing threshold. 7. Deactivating enzymes in gap remove any neurotransmitter they find on receptor sites. 8. Sodium gates on post-synaptic cell close again. 9. Reuptake of unused neurotransmitter in gap by pre-synaptic cell. SOME MECHANISMS OF DRUG ACTION (at excitatory and inhibitory synapses)
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This note was uploaded on 09/28/2010 for the course BIO 101 taught by Professor Martin during the Fall '08 term at Rutgers.

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NervSys2(5) - General Biology 10 I The Nervous System.4 A...

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