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8 Cards in this Set
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Electrical Potential (Voltage) |
is the force exerted on a charged particle; it reflects the difference in charge between the anode and the cathode. More current will flow as this difference is increased. Voltage is represented by the symbol V and is measured in units called volts |
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Electrical conductance |
is the relative ability of an electrical charge to migrate from one point to another. It is represented by the symbol g and measured in units called siemens (S). Conductance depends on the number of ions or electrons available to carry electrical charge, and the ease with which these charged particles can travel through space |
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electrical resistance |
the relative inability of an electrical charge to migrate. It is representedby the symbol R and measured in units called ohms ( ). Resistance issimply the inverse of conductance (i.e., R= 1/g) |
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Ohm’s law |
I (current) =g(conductance=1/Resistance R) V (voltage)
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Vm(membrane potential)=Sumation of (Equilibrium potentil of ion) * (Permiability of ion) |
it is known |
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action potentials convery infomation through |
Frequency and durration . |
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vertebrate Strategy in neurons |
Myelination, This allows for more neurons to be placed in the same space without sacrificing speed of transmition |
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Invertebrate Strategy |
to have a few really large fast axons that help with escape |
