ATP hydrolysis releases free adenosine into the extracellular space, which in turn acts on adenosine A1 receptors in the afferent arterioles and causes local constriction, thereby reducing RBF and ...

A reduction in renal perfusion normally results in dilatation of the glomerular afferent arteriole and constriction of the glomerular efferent arteriole so that glomerular capillary hydrostatic ...