AP Biology

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AP Biology Nervous Systems Part 1

description

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 - PowerPoint PPT Presentation

Transcript of AP Biology

Page 1: AP Biology

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