Nervous system

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  • Created by: Shannon
  • Created on: 25-02-15 20:55
What will happen when a neuron at rest is stimulated?
The membrane potential will be reduced
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When an action potential reaches the terminal of the axon, what fuses with the axonal membrane to release neurotransmitter?
Synaptic vessicles
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How do neurotransmitter molecules travel across the synaptic cleft?
Diffusion
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An agonist
Elicits a similar physiological response to a neurotransmitter.
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How does the drug Fluoextine increase levels of Serotonin?
By blocking the re-uptake of synaptic serotonin
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An increase in what will make the drug reach the brain faster?
Lipid solubility
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Name a mechanism of drug tolerance
Reduction in receptors for the drug.
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What does Caffeine block?
Adenosine receptors
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The psychoactive constituent for cannabis probably acts on the same receptors as
Anandamide
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What would be effective at reducing the effects of Morphine?
Naxolone
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Why do barbituates produce effects on respiratory depression, but not on sedation?
They have more than one site of action
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Postsynaptic receptor antagonists
Increase or reduce neural inhibition depending on typical activity of the neurotransmitter.
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Why does repeated stimulation of the mesolimbic system lead to substance abuse?
Because it is involved in the reinforcement system
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Other cards in this set

Card 2

Front

When an action potential reaches the terminal of the axon, what fuses with the axonal membrane to release neurotransmitter?

Back

Synaptic vessicles

Card 3

Front

How do neurotransmitter molecules travel across the synaptic cleft?

Back

Preview of the front of card 3

Card 4

Front

An agonist

Back

Preview of the front of card 4

Card 5

Front

How does the drug Fluoextine increase levels of Serotonin?

Back

Preview of the front of card 5
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