Thin ascending limb of loop of Henle

Thin ascending 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
Dorlands/Elsevier	l_10/12493907

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Overview

As the filtrate passes back up the thin ascending limb of loop of Henle, the concentration of the surrounding medulla decreases. The thin ascending limb is not permeable to water, but it is permeable to ions.

Sodium ions (Na⁺) are passively transported down this concentration gradient, from the thin ascending limb into the medulla.

Histology

As in the descending limb, the epithelium is low simple cuboidal.

See also

• loop of Henle

External links

• Physiology at MCG 7/7ch07/7ch07p10
• Physiology at MCG 7/7ch08/7ch08p10
• Overview at vet.cornell.edu

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 As such, some of the information contained herein may be outdated.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.