biopsychology - synaptic transmission

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  • Created by: boogluvr
  • Created on: 16-06-21 10:53
what is synaptic transmission?
the process of neighbouring neurons communicating by sending electrical + chemical messages across the synapse
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how are signals between neurons transmitted?
chemically
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how are signals within neurons transmitted?
electrically
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what is the end of a neuron called?
presynaptic terminal
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what happens when an electrical impulse reaches the presynaptic terminal?
it triggers the release of neurotransmitters
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where are neurotransmitters stored in the neuron?
synaptic vesicles
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what are neurotransmitters?
chemicals released from the synaptic vesicles to relay signals across the synapse from one neuron to another
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what is the postsynaptic receptor site?
the area of dendrite on the neighbouring neuron that receives the neurotransmitter
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what is a neutral network?
The process of transmission from one neuron to another
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could you refer to neurotransmitters structure as "lock and key"?
yes:
Each neurotransmitter has a particular structure, and fits perfectly into particular receptors on the post-synaptic cell
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what 2 effects can a neurotransmitter have on a neighbouring neuron?
excitation
or
inhibition
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what does excitation do?
increases the post-synaptic neuron’s positive charge and the likelihood of the message being passed on
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what does inhibition do?
increasing the post-synaptic neuron’s negative charge and decreasing the likelihood of the message being passed on
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give an example of an excitatory transmitter
seretonin
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give an example of an inhibitory transmitter
adrenaline
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how does research on neurotransmission have a real world application?
psychoactive drugs (medication)
Selective Serotonin Reuptake Inhibitors (SSRIs) work to increase the activity of serotonin by inhibiting reuptake of serotonin which increases level of serotonin in the synapse and means more serotonin being received by the
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Card 2

Front

how are signals between neurons transmitted?

Back

chemically

Card 3

Front

how are signals within neurons transmitted?

Back

Preview of the front of card 3

Card 4

Front

what is the end of a neuron called?

Back

Preview of the front of card 4

Card 5

Front

what happens when an electrical impulse reaches the presynaptic terminal?

Back

Preview of the front of card 5
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