Table 1. Nephron segment lengths and luminal diameters.

Segment	Length (cn)	Diameter (μm)
Proximal tubule	1.7	37
Descending limb	0.32	26
Medullary thick ascending limb	0.5	26
Cortical thick ascending limb	0.5	26
Distal convoluted tubule	0.2	20
Connecting tubule	0.4	24
Cortical connecting duct	0.4	45
Outer-medullary connecting duct	0.5	45
Inner-medullary connecting duct	1.2	50