Add module 3 in "basics of neuroscience" course #57
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lorforlinux
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Dec 16, 2024
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| **What happens when both ions try to pass through the sodium ion channel?** | ||
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| The arrangement of amino acids in the sodium ion channel is such that it favours sodium ions to pass through it but not potassium ions. Actually when both the ions come to pass the ion channel along with their hydration shell, the arrangement of amino acid in the sodium ion channel repels and removes the sodium ion from it’s hydration shell but is unable to remove potassium ion from it’s hydration shell. That's why sodium ions only pass through sodium ion channels. | ||
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| .. todo:: Add graphic for sodium ion channel | ||
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| .. note:: Even if in some cases the potassium ion is removed from its hydration shell, still potassium ions cannot pass through the sodium channel because of its large size and it is energetically unfavorable too. | ||
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| **What happens when both ions try to pass through the potassium ion channel?** | ||
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| The arrangement of amino acids in the potassium ion channel is such that it favours potassium ions to pass through it but not sodium ions. Actually when both the ions come to pass the ion channel along with their hydration shell, the arrangement of amino acid in the potassium ion channel repels and removes the potassium ion from its hydration shell but is unable to remove sodium ion from it’s hydration shell. That's why potassium ions only pass through potassium ion channels and sodium ions are not able to pass even if their ion size is small. | ||
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@bhawnasehgal there is redundancy in these answers, can we merge these into a single answer?
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Hey @lorforlinux
I have added content and explanatory graphics for module 3 which covers all about the resting potential. Please review.