What are the three regions of the kidneys and the function of each?
Answers
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There are three major regions of the kidney: Renal cortex, Renal medulla, Renal pelvis.
Renal cortex:
The kidney filters blood and sends waste materials to the bladder to become excreted urine. Inside the renal medulla are pyramids, each of which contains thousands of nephrons. Nephrons are made up of a glomerulus, the filtration unit, and tubules, which collect the filtrate to go to the bladder.
Renal medulla:
It contains the renal corpuscles and the renal tubules except for parts of the loop of Henle which descend into the renal medulla. It also contains blood vessels and cortical collecting ducts. The renal cortex is the part of the kidney where ultrafiltration occurs. Erythropoietin is produced in the renal cortex.
Renal pelvis:
In humans, the renal pelvis is the point where the two or three major calyces join together. It has a mucous membrane is covered with transitional epithelium, and an underlying lamina propria of loose to dense connective tissue. The renal pelvis functions as a funnel for urine flowing to the ureter.
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