What do collecting tubules and ducts receive urine from?

The collecting tubules and ducts receive urine primarily from the distal convoluted tubules. The distal convoluted tubules are responsible for the further modification of urine, including the regulation of electrolytes and the reabsorption of water, before it is carried into the collecting system of the nephron.

Once the urine moves from the distal convoluted tubules, it enters the collecting ducts, where additional adjustments can occur, particularly in terms of water reabsorption mediated by hormones like antidiuretic hormone (ADH). The flow from the distal convoluted tubules into the collecting tubules represents a critical point in the nephron where urine becomes more concentrated as it moves toward the renal pelvis.

Recognizing the fluid path within the nephron structure is essential for understanding renal function and urine formation, and this is why the distal convoluted tubules are identified as the source for the collecting tubules and ducts.