The collecting duct is the main site for determining urine concentration and volume. ADH can increase water reabsorption in it.
El conducto colector es el sitio principal donde se determina la concentración y el volumen de la orina. El ADH puede aumentar la reabsorción de agua en él.
| Front | collecting duct |
|---|---|
| Back | Main site where conc/vol of urine determined, filtrate passes down through tissue fluid of renal medulla (which is more concentrated with Na+ as you go down), water moves out of collecting duct via osmosis as it passes renal medulla, ADH action can add to water reabsorption |
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