Topic 8 Key topics

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What does an impulse jump between?
The nodes of ranvier
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What does a stimulated axon allow?
Sodium ion channels to open
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What does this let?
sodium ions diffues in
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What does this cause?
depolarisation
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Where do sodium ions flow?
between depolarised part and adjacent resting region
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What opens?
adjacent sodium ion channels open
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What is generated?
second action potential
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What is the resting potential?
Refractory period
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When the rod cell absorbs light, what happens?
Rhodopsin into retinal and opsin
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What does the membrane become less permeable to?
Na+
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What is still pumped out?
Na+
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What becomes more negative?
Inside
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Less neurotransmitter is what?
released
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Other cards in this set

Card 2

Front

What does a stimulated axon allow?

Back

Sodium ion channels to open

Card 3

Front

What does this let?

Back

Preview of the front of card 3

Card 4

Front

What does this cause?

Back

Preview of the front of card 4

Card 5

Front

Where do sodium ions flow?

Back

Preview of the front of card 5
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