Action Potentials Are Normally Carried in Only One Direction: from the Axon

question 62

Multiple Choice

Action potentials are normally carried in only one direction: from the axon hillock toward the axon terminals. If you experimentally depolarise the middle of the axon to threshold, using an electronic probe, then ________.

• A) no action potential will be initiated
• B) an action potential will be initiated and proceed only in the normal direction toward the axon terminal
• C) an action potential will be initiated and proceed only back toward the axon hillock
• D) two action potentials will be initiated, one going toward the axon terminal and one going back toward the hillock

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