Which cells line the collecting ducts ?
Correct Answer: Simple cuboidal
Description: Collecting ducts are lined with cuboidal epithelium containing two cell types: the principal cells and intercalated cells. The intercalated cells are scattered in the epithelium and paicipate in acid-base homeostasis. Type A intercalated cells are specialized for proton secretion. A defect of the type A cell leads to distal renal tubular acidosis. Type B intercalated cells secrete bicarbonate. Most cells of the epithelium are principal cells, which regulate the sodium and potassium concentrations under control of aldosterone and ADH. ref - BDC 6e vol2 pg317
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