QuestionJune 25, 2025

A neuron receives an EPSP near the axon hillock and an IPSP on the far side of the neuron cell body. The potentials are the same magnitude. Which of the following is the most likely outcome? The two potentials will combine via temporal summation The two potentials will cross each other out and nothing will happen The cell will likely be inhibited An action potential may be generated

A neuron receives an EPSP near the axon hillock and an IPSP on the far side of the neuron cell body. The potentials are the same magnitude. Which of the following is the most likely outcome? The two potentials will combine via temporal summation The two potentials will cross each other out and nothing will happen The cell will likely be inhibited An action potential may be generated
A neuron receives an EPSP near the axon hillock and an IPSP on the far side of the neuron cell body. The potentials are the same magnitude. Which of the following is the most likely outcome? The two potentials will combine via temporal summation The two potentials will cross each other out and nothing will happen The cell will likely be inhibited An action potential may be generated

Solution
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Answer

An action potential may be generated Explanation 1. Analyze EPSP and IPSP Locations EPSP is near the axon hillock, which is critical for action potential initiation. IPSP is far from the axon hillock. 2. Consider Magnitude and Distance Both potentials have the same magnitude, but EPSP's proximity to the axon hillock makes it more influential in triggering an action potential. 3. Determine Likely Outcome The EPSP near the axon hillock is likely to have a stronger effect than the distant IPSP, potentially leading to action potential generation.

Explanation

1. Analyze EPSP and IPSP Locations<br /> EPSP is near the axon hillock, which is critical for action potential initiation. IPSP is far from the axon hillock.<br /><br />2. Consider Magnitude and Distance<br /> Both potentials have the same magnitude, but EPSP's proximity to the axon hillock makes it more influential in triggering an action potential.<br /><br />3. Determine Likely Outcome<br /> The EPSP near the axon hillock is likely to have a stronger effect than the distant IPSP, potentially leading to action potential generation.
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