Explain how an action potential is propagated down an axon in continuous conduction. Why is saltatory conduction faster than continuous conduction?

Mark the following statements as true or false. If a statement if false, correct it to make a true statement.

a. An excitatory postsynaptic potential is caused by K+ or Cl− channels opening in the membrane of the postsynaptic neuron.

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b. Postsynaptic potentials may summate by spatial summation in which multiple neurons fire onto a single postsynaptic neuron.

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c. An inhibitory postsynaptic potential causes the membrane potential of the postsynaptic neuron to approach threshold.

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d. Spatial summation can combine two EPSPs, two IPSPs, or an EPSP and an IPSP.