Reviewed by Rishi Desai, MD, MPH
Regulation of renal blood flow
Approximately 25% of cardiac output is received by the kidneys. Blood flow can be regulated within the kidney by changing arteriolar resistance through several hormonal, autonomic, and autoregulatory mechanisms. Depending on the balance of resistance in the afferent and efferent arterioles, glomerular blood flow and glomerular filtration rates can be fine tuned.