Inleiding Fysiologie En Functionele Anatomie I (1008FBDFAR)
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Exercise 3: Neurophysiology of Nerve Impulses Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods
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Inleiding Fysiologie En Functionele Anatomie I (1008FBDFAR)
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Universiteit Antwerpen (UA)
PhysioEx Exercise 3 Activity 5
Exercise 3: Neurophysiology of Nerve Impulses
Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods
Inleiding Fysiologie En Functionele Anatomie I (1008FBDFAR)
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27-5-2021 PhysioEx Exercise 3 Activity 5
PhysioEx Lab Report
Exercise 3: Neurophysiology of Nerve Impulses
Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods
Name:
Date:
Session ID:
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1 Which of the following occurs after the peak of the action potential?
You correctly answered: All of these occur.
2 What is meant by Na+ channel inactivation?
You correctly answered: The Na+ channel no longer allows Na+ ions to pass through it.
3 What happens when voltage-gated K+ channels open?
You correctly answered: All of these occur.
4 It is harder to generate a second action potential soon after the first action potential because
You correctly answered: All of these make it harder to generate a second action potential.
Experiment Results
Predict Question
1 Predict Question: If you further decrease the interval between the stimuli, will the threshold for the
second action potential change?
Your answer: The threshold for the second action potential will be higher (requiring a larger
depolarization).
Stop & Think Question
1 Threshold can be defined as the minimum voltage needed to generate an action potential. Is the
threshold for the first action potential the same as, or different from, the threshold for the second
action potential with a 60 msec interval?
You correctly answered: The threshold for the first action potential is lower than the threshold for the
second action potential.
Experiment Data
Interval Between Stimuli Stimulus Voltage (mV) Second Action Potential?
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