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Synaptic transmission and inhibitory and exhibitory ? Help
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1_Zainn_
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Can someone explain each for full mark possible don't get it thank .
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HeadHoncho
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Do you mean inhibitory (IPSP) and excitatory (EPSP) post synaptic potentials?
The basic outline of the process of synaptic transmission is the action potention arrives at the pre synaptic neurones synaptic ending causing calcium channels to open. The influx of calcium ions stimulates neurotransmitter vesicles to move to and fuse with the presynaptic membrane, then the neurotransmitter is released into the synaptic cleft and diffuse accross where they bind to receptors on the post synaptic membrane. The chemical gated sodium channels open and the post synaptic membrane is depolarised and an action potential induced in the post synaptic neurone.
That would describe an EPSP, an IPSP basically prevents an action potential by i think causing hyperpolarisation (i think GABA does this) and therefore taking the electrochemical potential of the postsynaptic neurone further from the threshold potential
The basic outline of the process of synaptic transmission is the action potention arrives at the pre synaptic neurones synaptic ending causing calcium channels to open. The influx of calcium ions stimulates neurotransmitter vesicles to move to and fuse with the presynaptic membrane, then the neurotransmitter is released into the synaptic cleft and diffuse accross where they bind to receptors on the post synaptic membrane. The chemical gated sodium channels open and the post synaptic membrane is depolarised and an action potential induced in the post synaptic neurone.
That would describe an EPSP, an IPSP basically prevents an action potential by i think causing hyperpolarisation (i think GABA does this) and therefore taking the electrochemical potential of the postsynaptic neurone further from the threshold potential
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1_Zainn_
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#3
(Original post by HeadHoncho)
Do you mean inhibitory (IPSP) and excitatory (EPSP) post synaptic potentials?
The basic outline of the process of synaptic transmission is the action potention arrives at the pre synaptic neurones synaptic ending causing calcium channels to open. The influx of calcium ions stimulates neurotransmitter vesicles to move to and fuse with the presynaptic membrane, then the neurotransmitter is released into the synaptic cleft and diffuse accross where they bind to receptors on the post synaptic membrane. The chemical gated sodium channels open and the post synaptic membrane is depolarised and an action potential induced in the post synaptic neurone.
That would describe an EPSP, an IPSP basically prevents an action potential by i think causing hyperpolarisation (i think GABA does this) and therefore taking the electrochemical potential of the postsynaptic neurone further from the threshold potential
Do you mean inhibitory (IPSP) and excitatory (EPSP) post synaptic potentials?
The basic outline of the process of synaptic transmission is the action potention arrives at the pre synaptic neurones synaptic ending causing calcium channels to open. The influx of calcium ions stimulates neurotransmitter vesicles to move to and fuse with the presynaptic membrane, then the neurotransmitter is released into the synaptic cleft and diffuse accross where they bind to receptors on the post synaptic membrane. The chemical gated sodium channels open and the post synaptic membrane is depolarised and an action potential induced in the post synaptic neurone.
That would describe an EPSP, an IPSP basically prevents an action potential by i think causing hyperpolarisation (i think GABA does this) and therefore taking the electrochemical potential of the postsynaptic neurone further from the threshold potential
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