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Postsynaptic Potentials

View the animation below, then complete the quiz to test your knowledge of the concept.






1An inhibitory post synaptic potential (IPSP)...
A)will make the membrane potential of a neuron’s inner cell membrane more positive.
B)will make the membrane potential of a neuron’s outer cell membrane more positive.
C)will make the membrane potential of a neuron’s inner cell membrane more negative.
D)will make the membrane potential of a neuron’s outer cell membrane more negative.
E)will lower the membrane threshold potential of a neuron.



2An excitatory post synaptic potential (EPSP)...
A)will make the membrane potential of a neuron’s inner cell membrane more positive.
B)will make the membrane potential of a neuron’s outer cell membrane more positive.
C)will make the membrane potential of a neuron’s inner cell membrane more negative.
D)will make the membrane potential of a neuron’s outer cell membrane more negative.
E)will lower the membrane threshold potential of a neuron.



3An EPSP will cause...
A)chloride gates to open and allow chloride ions to diffuse into the cytosol.
B)potassium gates to open and allow potassium to diffuse out of the cytosol.
C)sodium gates to open, allowing sodium to diffuse out of the cell.
D)potassium gates to open, allowing potassium to diffuse into the cell.
E)both sodium and potassium gates to open, allowing sodium to diffuse into the cell and potassium to diffuse out of the cell.



4EPSPs and IPSPs have a long term effect on a neuron.
A)True
B)False



5IPSPs can use different methods to obtain the same results.
A)True
B)False







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