At the point when erythrocytes experience shear stress in contracted vessels, they discharge ATP, which causes the vessel dividers to unwind and enlarge to advance typical blood flow.
At the point when their hemoglobin atoms are deoxygenated, erythrocytes discharge S-nitrosothiols, which additionally act to widen blood vessels, therefore guiding more blood to zones of the body drained of oxygen.
Erythrocytes can likewise combine nitric oxide enzymatically, utilizing L-arginine as substrate, as do endothelial cells. Exposure of erythrocytes to physiological levels of shear anxiety actuates nitric oxide synthase and fare of nitric oxide, which may add to the direction of vascular tonus.