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  1. 心脏的神经支配

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支配心脏的肽能神经元

心脏中存在多种肽类神经纤维,释放的递质有:神经肽Y、血管活性肠肽、降钙素基因相关肽、阿片肽等。

现已知一些肽类递质可与其他递质(如单胺和ACh)共存于同一N元并共同释放。

目前对于分布在心脏的肽能N元的功能尚不完全清楚。但其存在说明也可能参与对心肌和冠脉的调节。如:血管活性肠肽对心肌有正性变力作用和舒张冠脉的作用;降钙素基因相关肽有加快心率的作用。

2.血管的神经支配

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