phys synapse notes

phys synapse notes - Synapse- a functional connection...

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Synapse - a functional connection between a neuron(presynaptic) and another cell (postsynaptic) Requirements for Synapse to work: (all presynaptic) 1. production of the neurotransmitters 2. storage of the neurotransmitters 3. release of the neurotransmitters (all postsynaptic) 4. binding of neurotransmitter 5. generation of a new action potential 6. removal of neurotransmitters from the synapse Two kinds of synapse connections: 1.chemical 2. electrical Chemical Synapse: -synaptic cleft separates presynaptic from postsynaptic cell -neurotransmitters are in synaptic vesicles -more common Electrical Synapse: - no chemical messenger -gap junctions (connexons-direct connection between pre and post) -response in post cell is the same polarity as response in pre cell -more rapid action potential transmission (.2ms v. 2ms) -not as versatile -more common in muscle cells where synchronization is important (heart) Chemical Neurotransmitter release -synaptic vesicles (containing neurotransmitter) congregate the
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phys synapse notes - Synapse- a functional connection...

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