No. The chain of reactions set off by an action potential either is or is not set off.
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No, action potentials are all-or-nothing events that either reach their full potential or do not occur at all. Once the threshold is met, the action potential will propagate along the neuron without diminishing in strength.
No, proteins play a critical role in generating and propagating action potentials in neurons. Channels and pumps made of proteins are responsible for the movement of ions across the cell membrane, which is crucial for the changes in membrane potential that underlie an action potential. Without proteins, the necessary ion movements would not occur, and an action potential would not be possible.
No, hyperpolarization graded potentials do not lead to action potentials. Hyperpolarization makes the membrane potential more negative, which inhibits the generation of an action potential by increasing the distance from the threshold potential needed to trigger an action potential.
The axon of a neuron is responsible for conducting an action potential. This is made possible by the presence of voltage-gated ion channels along the axon membrane that allow for the propagation of electrical signals.
The regeneration of action potential is called "propagation." It involves the transmission of the action potential along the length of the neuron's axon.
Action potential