ap biology nervous systems part 1. step 1: reception
TRANSCRIPT
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AP Biology
Nervous SystemsPart 1
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Step 1: Reception
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Step 2: Transduction
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Step 3: Response
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Ions and Energy
150 mMKCl
Innerchamber
Outerchamber
–92 mV
Potassiumchannel
5 mMKCl
Artificialmembrane
K+
Cl–
150 mMNaCl
Innerchamber
Outerchamber
+62 mV
Sodiumchannel
15 mMNaCl
Na+
Cl–
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Evolution of a Nervous system in Animals
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Overview of the Nervous System
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CNS vs. PNS
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Neuron structure
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Synapse and Neurotransmitter
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Glial Cells(Like a house frame … but for a brain
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Schwann Cells OR Oligiodendrocytes
Axon Nodes ofRanvier
Schwanncell
Myelin sheathNucleus ofSchwann cell
Schwanncell
Nodes of Ranvier
Layers of myelinAxon
0.1 µm