Table 1.

Boundary conditions for descending tubules and vessels at x = 0

				DVR
	SDL	LDL	CD	Plasma	RBC
Fv,† nl/min	10	12	6.6*	6	2
CNa, mM	160	160	74.3*	163.7	163.7
Curea, mM	15	15	164.6*	8	8
CO2, mM	15.2 × 10−3	15.2 × 10−3	15.2 × 10−3	60.4 × 10−3	60.4 × 10−3
CHb, mM	0	0	0	0	3.0
CHbO2, mM	0	0	0	0	17.3

SDL/LDL, descending limb of short/long loop of Henle; DVR, descending vasa recta; RBC, red blood cells.

^*Collecting duct (CD) inflow concentrations (C) are obtained as described in the appendix.

^†Fluid flows (F_v) are given for individual tubule or vessel.