title: Comparison of chloride concentration and osmolality in proximal tubular fluid, peritubular capillary plasma and systemic plasma in the rat.
abstract: 1. Chloride concentration and osmolalities were compared in consecutively collected samples of proximal tubular fluid, peritubular capillary plasma and systemic plasma. 2. Mean chloride concentrations (m-mole/l) were 141.3+/-2.6 in tubular fluid, 114.8+/-1.7 in peritubular capillary plasma and 119.4+/-1.8 in systemic plasma. 3. Mean osmolalities (m-osmole/kg H2O) were 297+/-2.2 in tubular fluid, 293+/-2.4 in peritubular capillary plasma and 299+/-1.8 in systemic plasma. 4. These differences are discussed in relation to the anatomical and functional organization of the peritubular capillaries and renal tubules.
mesh_terms: D000818:Animals; D002196:Capillaries; D002712:Chlorides / Q000097:blood / Q000378:metabolism*; D007687:Kidney Tubules, Proximal / Q000098:blood supply / Q000378:metabolism*; D008297:Male; D009994:Osmolar Concentration; D051381:Rats
chemical_list: D002712:Chlorides