Table 3.

Radii and lengths of tubular segments used within the single nephron representation in order to calculate tubular pressures and SNGFR.

	Radius r (μm)	Length L (mm)
Cortex: proximal tubule (short and long)	10.5a	6.2e
Outer medulla: descending Henle’s loop (short and long)	8.75b	2f
Inner medulla I: descending Henle’s loop	8c	2f
Inner medulla II: descending Henle loop	8c	2f
Inner medulla II: ascending Henle’s loop	8c	2f
Inner medulla I: ascending Henle’s loop	8c	2f
Outer medulla: ascending Henle’s loop (short and long)	9.5c	2f
Cortex: distal tubule (short and long)	9.5a	2f
Cortex: collecting duct	10d	1f
Outer medulla: collecting duct	10.5d	2f
Inner medulla I: collecting duct	12d	2.5f
Inner medulla II: collecting duct	14d	2.5f

^aRasch and Dørup, 1997; ^bthe outer stripe of outer medulla contains the proximal straight tubule, thus a weighted mean of proximal tubule radius and descending Henle’s loop radius was used; ^cMorgan and Berliner, 1968; Kainer, 1975; Kone et al., 1984; ^dKnepper et al., 1977; ^eWahl and Schnermann, 1969; ^festimated from literature values of tubular segments lengths (Kainer, 1975) and kidney region dimensions (Kriz, 1967; Knepper et al., 1977).