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kaylarenee56 kaylarenee56
wrote...
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11 years ago
I need help with physioex 9.0 activity 3 &4. Any help would be appreciated!!  lol
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wrote...
Valued Member
11 years ago
Post the questions.
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kaylarenee56 Author
wrote...
11 years ago
Define inactivation as it applies to a voltage-gated sodium channel.

How did the threshold for the second action potential change as you further decreased the interval between the stimuli?

Why is it harder to generate a second action potential during the relative refractory period?
wrote...
Staff Member
11 years ago
Define inactivation as it applies to a voltage-gated sodium channel.

Voltage-gated sodium channels are inactivated when they no longer allow sodium to diffuse through.

How did the threshold for the second action potential change as you further decreased the interval between the stimuli?

The threshold for the second action potential increased as the interval between the stimuli decreased as predicted.

Why is it harder to generate a second action potential during the relative refractory period?

A greater stimulus is required because voltage gated potassium channels that oppose depolarization are open during this time.

Please upload your work once you're done, thanks!
bio_man,  jamiejones823
- Master of Science in Biology
- Bachelor of Science
kaylarenee56 Author
wrote...
11 years ago
Thanks much. Will do!!   Waving Hand Sign
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