Abstract
In conclusion, angiotensin receptors and α2-adrenoceptors appear to be located on the sympathetic nerve endings, but a major part of the β2-adrenoceptors probably is subendothelial (most likely on smooth muscle cells). Angiotensin II, synthesized in response to β2-adrenoceptor activation, probably stimulates angiotensin receptors on the noradrenergic nerves, leading to an increase in noradrenaline release.