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Answer to Question #59101 in Cell Biology for Tracy Guido

Question #59101
27
Which of the following statements describes saltatory conduction?
Conduction occurs exclusively at nodes of Ranvier.
Voltage-gated sodium channels open, depolarizing unmyelinated axons.
Voltage-gated potassium channels open, depolarizing myelinated axons
Conduction occurs along unmyelinated axons, decreasing conduction velocity.

28
What is temporal summation?
combination of postsynaptic potentials due to the repeated stimulation of a single synapse
predisposition for a neuron to be excited due to previous stimuli shifting the baseline potential towards threshold
addition of postsynaptic potentials due to the simultaneous stimulation of multiple synapses
interaction between inhibitory postsynaptic potentials and excitatory postsynaptic potentials
Expert's answer
27. Conduction occurs exclusively at nodes of Ranvier.
28. addition of postsynaptic potentials due to the simultaneous stimulation of multiple synapses

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