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Summary The intrinsic cholinergic nerve supply of the human myometrium was studied by using electrical transmural stimulation and was found to be postganglionic and minimal. The pharmacological findings indicated that the human nonpregnant myometrium possessed sensitive cholinergic muscarinic receptors, but during pregnancy the sensitivity of the muscarinic receptors was markedly reduced. These results support our hypothesis that the human pregnant myometrium is protected from autonomic influence.
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Nakanishi et al. (1971) studied this question.
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