Zoology - Excretory Products and their Elimination Question with Solution | TestHub

During urine formation, the tubular cells secrete substances like${\mathrm{H}}^{+},\mathrm{ }{\mathrm{K}}^{+}$and ammonia into the filtrate. Tubular secretion is also an important step in urine formation as it helps in the maintenance of ionic and acid base balance of body fluids.