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心脏乃泵血器官,其正常活动依赖心肌细胞电、机械和代谢等活动的协调一致。这些活动主要受肾上腺素能神经及其介质儿茶酚胺(以去甲肾上腺素为主)及胆碱能神经及其介质乙酰胆碱的调节。其它激素和激素样化合物,例如甲状腺素、肾上腺皮质激素、胰
The heart is a blood-pumping organ whose normal activity depends on the coordination of cardiomyocyte electrical, mechanical, and metabolic activities. These activities are mainly regulated by the adrenergic nerve and its mediators catecholamines (mainly norepinephrine) and the cholinergic nerve and its mediator acetylcholine. Other hormonal and hormone-like compounds, such as thyroxine, adrenocorticotropic hormone, and pancreas