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AP Biology. Nervous Systems Part 1. Step 1: Reception. Step 2: Transduction. Step 3: Response. –92 mV. +62 mV. Inner chamber. Outer chamber. Inner chamber. Outer chamber. 150 m M NaCl. 150 m M KCl. 15 m M NaCl. 5 m M KCl. Ions and Energy. Cl –. K +. Na +. Cl –. Sodium
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AP Biology Nervous Systems Part 1
–92 mV +62 mV Inner chamber Outer chamber Inner chamber Outer chamber 150 mM NaCl 150 mM KCl 15 mM NaCl 5 mM KCl Ions and Energy Cl– K+ Na+ Cl– Sodium channel Potassium channel Artificial membrane
Schwann Cells OR Oligiodendrocytes Nodes of Ranvier Layers of myelin Axon Schwann cell Schwann cell Nucleus of Schwann cell Nodes of Ranvier Axon Myelin sheath 0.1 µm