Countercurrent Multiplier
unseel.com · loop of Henle  ·  medullary gradient  ·  urine concentration
cortex 300 mOsm/kg
papilla 300 mOsm/kg
urine isotonic
step —
descending limb (water out)
ascending limb (salt pumped out)
NaCl in the interstitium
collecting duct (ADH)
Unseel.com · Countercurrent Multiplier