Descending limb of loop of Henle
|Descending limb of loop of Henle|
Scheme of renal tubule and its vascular supply. (Labeled at center left.)
Nephron ion flow diagram
|Latin||Pars descendens ansae nephricae|
The permeability is as follows:
|ions||Low permeability. Sodium and chloride ions do not easily pass through.|
|water||Highly permeable. Water is readily reabsorbed from the descending limb by osmosis.|
Like the ascending limb, the descending limb has thick and thin portions. However, this distinction is not as important physiologically as in the ascending limb, so often the two are treated as one structure. The thick descending limb is less important than the thin descending limb, so often the terms "descending limb" and "thin descending limb" are used interchangeably.
Some sources simply refer to a "thin limb". In this context, the thin ascending limb of loop of Henle would be included.
- a.The descending limb of the loop of Henle is highly permeable to water and relatively impermeable to solutes such as Na and Cl
- Physiology: 7/7ch08/7ch08p09 - Essentials of Human Physiology
- Physiology: 7/7ch07/7ch07p09 - Essentials of Human Physiology
- University of Illinois College of Medicine
- Histology image:15804loa from Vaughan, Deborah (2002). A Learning System in Histology: CD-ROM and Guide. Oxford University Press. ISBN 978-0195151732.