AP Biology Nervous Systems Part 1
Mar 26, 2015
AP Biology
Nervous SystemsPart 1
Step 1: Reception
Step 2: Transduction
Step 3: Response
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–
Evolution of a Nervous system in Animals
Overview of the Nervous System
CNS vs. PNS
Neuron structure
Synapse and Neurotransmitter
Glial Cells(Like a house frame … but for a brain
Schwann Cells OR Oligiodendrocytes
Axon Nodes ofRanvier
Schwanncell
Myelin sheathNucleus ofSchwann cell
Schwanncell
Nodes of Ranvier
Layers of myelinAxon
0.1 µm