Collecting ducts

Collecting Ducts

Collecting ducts (pronunciation: kuh-lek-ting duhkts) are a component of the nephron, the functional unit of the kidney. They play a crucial role in the regulation of water balance, electrolyte balance, and acid-base balance in the body.

Etymology

The term "collecting duct" is derived from its function of collecting the filtrate from the distal convoluted tubule and transporting it to the renal pelvis.

Function

Collecting ducts are responsible for the final adjustment of the osmolarity and volume of urine. They reabsorb water and certain ions to maintain the body's electrolyte balance, while other substances, such as urea and potassium ions, are secreted into the urine.

Structure

Collecting ducts are composed of two cell types: principal cells and intercalated cells. Principal cells are responsible for the reabsorption of sodium ions and water and the secretion of potassium ions. Intercalated cells, on the other hand, help regulate the body's pH by reabsorbing bicarbonate ions and secreting hydrogen ions.

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Collecting ducts

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