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Theinterdigestivemigratingmotorcomplex(MMC)inthesmallintestineisknownasaphasiccontractiontl).ThreepiecesofmajormechanismofinitiationoftheMMChavebeeninvestigated:extrinsicneuralcontrol,hormonalcontrol,andintrinsicneuralcontrol.Theinitiationandmigratingismainlycontrolledbythehormonalandtheintrinsicneural,thecentralnervoussystemregulatestheMMCcyclingonlyduringfed,sleepandstressstates.Nitricoxide(NO)hasbeenfoundoneoftheinhibitoryneurotransmitterofnonadrenergicnoncholinergic(NANC)neuronsinthe… 相似文献
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Neuronalnitrcoxidesynthase(NOS)'isknowntoproducenitricoxide(NO)fromL--arginineinthepresenceofreducednicodineamideadeninedinucleotidphosphate(NADPH),calmodulin,andcalciumironstl].RecentpharmacologicalandphysiologicalstudieshaveproposedthatNOplayaroleasaneuronalmessengerofnonadrenergic,non-cholinergic(NANC)relaxationinthegastrointestinaltractinvariousmammalst2.3i.AlthoughneuronalNOShasbeenshowntobeidenticaltoneuronalNADPHdiaphoraseinthebrainoftherate.,.andmostofstudieshavereportedthatt… 相似文献
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