4:55 Quiz 3 0:07:15 elapsed The stage in action potential that immentian.ca depolarization is known as a) threshold b) polarization c) absolute refractory period d) refractory period e) repolarization Question 12 (1 point) \( \leftarrow \) e \( \rightarrow \)
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Did you know that action potentials are essential for how our neurons communicate? When a neuron is triggered, it allows sodium ions to rush in, causing depolarization and a rapid increase in voltage. This electrical event allows signals to travel along nerve fibers at lightning speed—up to 120 meters per second! One common mistake in understanding action potentials is confusing depolarization with repolarization. While depolarization refers to the process of the inside of the neuron becoming more positively charged, repolarization involves returning to a more negative internal environment after the peak of the action potential. Getting these two stages mixed up can lead to misunderstandings about how nerve signals propagate!