A U-shaped segment of the nephron in a vertebrate kidney that functions in water resorption.
loop of Henle
the U-shaped, nonconvoluted part of the tubule which leads from a BOWMAN'S CAPSULE to the central cavity of the kidney (the pelvis), and where the urine is concentrated. Together, the capsule and tubule form a NEPHRON. Animals in arid climates have very long loops of Henle and produce small quantities of highly concentrated urine.
It is worth mentioning that approximately 65 % of the filtered water is reabsorbed in the proximal tubule and 15 % in the descending thin limb of Henle, which both are constitutive processes (Kortenoeven & Fenton).
In medulla of kidney, immunolight microscopy confirmed weak labelling of AQP1 in the thick descending limb and descending thin limb of Henle's loop of HND compared with ND rats.