摘要: Regulatory peptides that have actions on the cardiovascular system are produced in plasma, vascular endothelium, cardiac muscle, endocrine tissue and neurones of vertebrates. In many cases structurally identical or similar can also be found invertebrates. Many regulatory act as hormones their depend circulating peptide levels. these may not only site action peptides. Furthermore, different effects parts system, depending location subtypes receptors. contained peripheral autonomic unmyelinated sensory supplying heart blood vessels Most peptide-containing contain a catecholamine acetylcholine, although all so far been to Some shown released activation specific nerve pathways, thus potentially which well defined spatially temporally.