Neuroscience Quiz

An action potential is a rapid change from the resting potential at a specific place along the neuron. It occurs near the cell body of the neuron.

The process of nerve signal propagation is likened to tipping the first of a row of standing dominoes. The first domino does not travel along the row but its fall is relayed to the end of the row, one domino at a time.

When the axon region has its first set of channels open, positive ions diffuse inward, and an action potential is generated. Then, the same region opens the second set of channels, allowing other positive ions to diffuse out of the axon.

<p>A nerve signal starts out as an action potential generated near the cell body of the neuron. To function as a long-distance signal, this local event must be passed along the neuron.</p> Signup and view all the answers

<p>Positive ions diffuse inward when the first set of channels open, generating an action potential. Then, other positive ions diffuse out of the axon when the second set of channels open, aiding in the propagation of the nerve signal.</p> Signup and view all the answers