Home » Each kidney is made up of a large number of excretory units called Excretory System MCQs Each kidney is made up of a large number of excretory units called January 24, 2022 9 Views Q. Each kidney is made up of a large number of excretory units called A. Glomerulus B. Bowman’s Capsule C. Nephron D. Blood capillaries Answer: Nephron