Two stimuli occur on the same neuron more than a minute apart. The second stimul

Question

Two stimuli occur on the same neuron more than a minute apart. The second stimulus is more than ten times greater than the first. If we compare the two resulting action potentials, which is TRUE?

Multiple Choice

The second stimulus will lead to an action potential with higher amplitude.

The second stimulus will lead to an action potential with a longer duration.

The second stimulus will lead to an action potential with a longer hyperpolarization at the end.

The amplitude of the two action potentials will be the same.

The amplitude and duration of the second action potential will be greater than the first.

Explanation / Answer

If two stimuli occur on same neuron more than minute apart .The second stimulus is more than ten times greater than first then the amplitude of two action potential will be the same and the second stimulus will generate an action potential with the longer duration.The travelling of stimulus occur via digital form means that the amplitude will remain the same .The faster and strong stimulus will increase the time of conduction as the action potential generated the resting membrane potential -70 mv changes to depolarization phase of around + 30 mv by rushing Na + ions in and K+ leaked channels out and sometime the after hypolarizing phase of about -90 mv thus increases the time of a strong stimulus.

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