Summary: In this video, Dr Mike explains that every minute your kidneys receive 1,000mL of blood from the heart (20% of cardiac output). Of this 1,000mL around 400mL are cells (kidneys don't care about this) and 600mL is blood plasma (kidneys care about this). Only 20% of this 600mL is filtered into the nephron (120mL) every minute!! Let's take a look!
