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nicotinic receptor
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Figure 2: Organization of the autonomic nervous system. nicotinic receptor
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nicotinic receptor

biology

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function in neurotransmitter release

  • neuron; conduction of the action potential
    In nervous system: Acetylcholine

    The nicotinic receptor is a channel protein that, upon binding by acetylcholine, opens to allow diffusion of cations. The muscarinic receptor, on the other hand, is a membrane protein; upon stimulation by neurotransmitter, it causes the opening of ion channels indirectly, through a second messenger. For…

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  • nervous system
    In human nervous system: Neurotransmitters and receptors

    Nicotinic cholinergic receptors stimulate sympathetic postganglionic neurons, adrenal chromaffin cells, and parasympathetic postganglionic neurons to release their chemicals. Muscarinic receptors are associated mainly with parasympathetic functions and are located in peripheral tissues (e.g., glands and smooth muscle). Peptidergic receptors exist in target cells as well.

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