The Signal That Crosses a Synapse Is Stopped When

question 27

Multiple Choice

The signal that crosses a synapse is stopped when

• A)the responding cell runs out of sodium and is no longer able to respond to the stimulus.
• B)the neurotransmitter is enzymatically broken down or transported back to the signaling cell.
• C)the responding cell runs out of potassium and is no longer able to respond to the stimulus.
• D)a second action potential traveling down the signaling cell sounds a "retreat" and the neurotransmitters return to the signaling cell

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