neurons
TRANSCRIPT
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Today’s TopicNeurons
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BumpyBulbousBranched
DENDRITES
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Stubby
Mushroom
Thin
3 Common Dendritic Spines
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Soma
Lots of sodium outside
+ -
Lots of potassium inside
At Rest
1+ charge each
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as each gate opens the next is triggered
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as each gate opens the next is triggered
neurotransmitteris released
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Neurotransmitter binds to receptorCauses some sodium channels to open
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++Ligand-gated channel opensNT+
-++
Sodium ions enter
Cell is more positive
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Soma-
NT- 55
Voltage-gated channels open as cell voltage reaches threshold
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Voltage-gated channels open as cell voltage reaches threshold
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Dr. Ken Tangen
www.BiologicalPsych.com