1a. Explain how chemically regulated channels differ from voltage-regulated channels and the nature of excitatory and inhibitory...

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Medical Sciences

1a. Explain how chemically regulated channels differ fromvoltage-regulated channels and the nature of excitatory andinhibitory postsynaptic potentials.
1b. Explain how ligand-gated channels are opened, usingnicotinic ACh receptors as an example.
1c. Explain how ligand-gated channels operate, using muscarinicACh receptors as an example.
1d. Describe where stimulatory and inhibitory effects ofmuscarinic ACh receptors occur and how these effects areproduced.
1e. Compare the properties of EPSPs and action potentials,identify where in a neuron these are

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1achemically regulated channels they open and close inresponse to chemicals binding to them Like neurotransmitterssuch as AcetylCholine when released post synaptically bind to AChreceptor causing opening of sodium channels Other eg are hormonesetcVoltage regulated channels open and close in repsonseto change in membrane potential as seen in neuronalmembrane and neuromuscular junctionexcitatory postsynaptic See Answer

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