Chapter 33 The Nervous System.pdf
Chapter 33 The Nervous System.pdf
Chapter 33 The Nervous System.pdf
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<strong>Chapter</strong> <strong>33</strong><strong>Nervous</strong> <strong>System</strong><strong>33</strong>.1 Structure of the <strong>Nervous</strong> <strong>System</strong>• When a stimulus reachesthreshold, channels openin the plasma membrane.• Sodium ions are rapidlypumped through thesechannels causing atemporary change in theelectrical charges.• More positive charges arenow inside the membrane.
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