Section 3
Physiology of the Kidneys
Book
Version 29
By Boundless
By Boundless
Boundless Anatomy and Physiology
Physiology
by Boundless
5 concepts
![Thumbnail](../../../../../../figures.boundless-cdn.com/5366/square/renal-diuretics.gif)
Overview of Urine Formation
Urine is formed in three steps: filtration, reabsorption, and secretion.
![Thumbnail](../../../../../../figures.boundless-cdn.com/5362/raw/gray1130.jpg)
Glomerular Filtration
Glomerular filtration is the renal process whereby fluid in the blood is filtered across the capillaries of the glomerulus.
![Thumbnail](../../../../../../figures.boundless-cdn.com/33468/square/zk0mwdler7cx3zhwf4uu.jpg)
Regulation of Glomerular Filtration Rate
Regulation of GFR requires both a mechanism of detecting an inappropriate GFR as well as an effector mechanism that corrects it.
![Thumbnail](../../../../../../figures.boundless-cdn.com/23475/square/physiology-of-nephron.jpg)
Tubular Reabsorption
Tubular reabsorption is the process by which solutes and water are removed from the tubular fluid and transported into the blood.
![Thumbnail](../../../../../../figures.boundless-cdn.com/5279/square/physiology-of-nephron.jpg)
Tubular Secretion
Hydrogen, creatinine, and drugs are removed from the blood and into the collecting duct through the peritubular capillary network.