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. 2022 Jan 10;322(2):F225–F244. doi: 10.1152/ajprenal.00413.2021

Table 1.

Program of calculations

Calculation Blood K+ TGF Off PC ENaC × 2Na+-K+-ATPase × 2 NCC × 20% QI (Amm) × 50%
Section A
A1 5.0
A2 6.5
A3 6.5 X
Section B
B0 = A2 6.5
B1 6.5 X
B2 6.5 X X
B3 6.5 X X X
Section C
C0 = A3 6.5 X
C1 6.5 X X
C2 6.5 X X X
C3 6.5 X X X X

ENaC, epithelial Na+ channel; NCC, NaCl cotransporter; PC, principal cell; QI(Amm), proximal tubule ammoniagenesis; TGF, tubuloglomerular feedback.