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. Diagram is labeled in Polish, but ion flow can still be identified.|
|Gray's||subject #253 1223|
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.
- Essentials of Human Physiology by Thomas M. Nosek. Section 7/7ch08/7ch08p09.
- Essentials of Human Physiology by Thomas M. Nosek. Section 7/7ch07/7ch07p09.
- Organology at UC Davis Urinary/mammal/medulla/medulla1 - "Mammal, kidney medulla (LM, Medium)"
- Histology image: 15804loa – Histology Learning System at Boston University
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.