Courtneyks
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how are nervous impulses transmitted and how do they move from one neurone to the next.
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macpatgh-Sheldon
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Hi,

You want to talk about the cycle of events in changing net intra-neuronal +ve charges due to entry of Na+ into the axon [depolarization] moving along the axon [away from the cell body] in myelinated fibres [saltatory conduction] and unmyelinated fibres. This is for transmission WITHIN the same neurone.

Then you will need to mention transmission at a synapse [from one neurone to the next] via release of neurotransmitters from the vesicles in the synaptic knob by exocytosis, then diffusion across the synaptic cleft followed by stimulation of the postsynaptic receptors [various ones depending on the specific type of neurone e.g. acetylcholine at the parasympathetic terminal at the end organ innervated by the post-ganglionic neurone.

You can mention EPSP and IPSP [google them] depending on the neurone type and neurotransmitter e.g. NA [noradrenaline] is mainly excitatory; GABA is inhibitory.

Hope this gets the hockey ball rolling for you - super sport [fast, skilful, and tough]

M [specialist biology tutor]
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Courtneyks
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(Original post by macpatgh-Sheldon)
Hi,

You want to talk about the cycle of events in changing net intra-neuronal +ve charges due to entry of Na+ into the axon [depolarization] moving along the axon [away from the cell body] in myelinated fibres [saltatory conduction] and unmyelinated fibres. This is for transmission WITHIN the same neurone.

Then you will need to mention transmission at a synapse [from one neurone to the next] via release of neurotransmitters from the vesicles in the synaptic knob by exocytosis, then diffusion across the synaptic cleft followed by stimulation of the postsynaptic receptors [various ones depending on the specific type of neurone e.g. acetylcholine at the parasympathetic terminal at the end organ innervated by the post-ganglionic neurone.

You can mention EPSP and IPSP [google them] depending on the neurone type and neurotransmitter e.g. NA [noradrenaline] is mainly excitatory; GABA is inhibitory.

Hope this gets the hockey ball rolling for you - super sport [fast, skilful, and tough]

M [specialist biology tutor]
Thank you, I actually just managed to answer this myself glad to know I was going the right way with my answer
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