A cortical lobule (or renal lobule) is a part of a

renal lobe The renal lobe is a portion of a kidney consisting of a renal pyramid and the renal cortex above it. In humans, on average there are 7 to 18 renal lobes. It is visible without a microscope, though it is easier to see in humans than in other animal ...

. It consists of the

nephrons The nephron is the minute or microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a Nephron#Renal tubule, renal tubule. The renal corpuscle consists of a tuft of capillary, capillaries called a glomer ...

grouped around a single medullary ray, and draining into a single

collecting duct The collecting duct system of the kidney consists of a series of tubules and ducts that physically connect nephrons to a minor calyx or directly to the renal pelvis. The collecting duct participates in electrolyte and fluid balance through rea ...

. Its near identical parallel is the

rectal The rectum (: rectums or recta) is the final straight portion of the large intestine in humans and some other mammals, and the Gastrointestinal tract, gut in others. Before expulsion through the anus or cloaca, the rectum stores the feces te ...

lobe, which is present in the majority of mammals.

References

External links

* Kidney anatomy {{Portal bar, Anatomy