Neuronal Pathways and Summation Quiz

What is a converging pathway?

• When the axon from one neuron divides and synapses with more than one other neuron

• When two or more neurons synapse with the same neuron

• When local potentials originate from different locations on the postsynaptic neuron

• When local potentials overlap in time

What is a diverging pathway?

• When the axon from one neuron divides and synapses with more than one other neuron

• When two or more neurons synapse with the same neuron

• When local potentials originate from different locations on the postsynaptic neuron

• When local potentials overlap in time

What is summation?

• Allows integration of multiple subthreshold local potentials

• When the axon from one neuron divides and synapses with more than one other neuron

• When two or more neurons synapse with the same neuron

• When local potentials overlap in time

What is spatial summation?

• Allows integration of multiple subthreshold local potentials

• When the axon from one neuron divides and synapses with more than one other neuron

• When local potentials originate from different locations on the postsynaptic neuron

• When local potentials overlap in time

What is temporal summation?

• Allows integration of multiple subthreshold local potentials

• When the axon from one neuron divides and synapses with more than one other neuron

• When two or more neurons synapse with the same neuron

• When local potentials overlap in time

In a converging pathway, how many neurons synapse with the same neuron?

• One neuron

• Two neurons

• Three neurons

• More than three neurons

In a diverging pathway, what happens to the axon from one neuron?

• It divides and synapses with more than one other neuron

• It terminates without synapsing with any other neuron

• It forms a loop and synapses with itself

• It branches out and synapses with multiple neurons

What is the purpose of summation?

• To decrease the membrane potential

• To prevent the integration of local potentials

• To bring the membrane potential to threshold and trigger an action potential

• To inhibit the firing of action potentials

Which type of summation involves local potentials originating from different locations on the postsynaptic neuron?

• Converging pathway

• Diverging pathway

• Spatial summation

• Temporal summation

Which type of summation involves local potentials overlapping in time?

• Converging pathway

• Diverging pathway

• Spatial summation

• Temporal summation