Once an Action Potential Occurs at the Axon Hillock, Why

question 15

Multiple Choice

 Once an action potential occurs at the axon hillock, why is it replicated at the next node of Ranvier?

• A) Incoming sodium ions diffuse to the next node, pushing potassium ions ahead as well, and threshold will be attained.
• B) The sodium-potassium pumps at the next node recapture sufficient potassium to reach threshold and trigger another action potential.
• C) The action potential drifts passively down the length of the entire axon.
• D) The occurrence of an action potential at the axon hillock attracts potassium from the adjacent node, and threshold will be attained.

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Definitions:

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A measure of the progress of a child's physical, emotional, intellectual, and social development compared to typical milestones.

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Deliberately Pretending

Intentionally acting in a way that is not genuine.

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In psychology, a defense mechanism where the mind substitutes either a new aim or a new object for goals felt in their original form to be dangerous or unacceptable.