The collecting duct system of the kidney consists of a series of tubules and ducts that connect the nephrons to the ureter. It participates in electrolyte and fluid balance through reabsorption and excretion, processes regulated by the hormones aldosterone and antidiuretic hormone. There are several components of the collecting duct system, including the connecting tubules, cortical collecting ducts, and medullary collecting ducts [Wikipedia: http://en.wikipedia.org/wiki/Collecting_duct_system].
Synonyms: collecting duct system
Hierarchy: 5
Parent: renal tubule
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