PATHOLOGY

Detailed explanation-1: -During urine formation, the tubular cells secrete substances like hydrogen ions, potassium ions and ammonia into the filtrate. This process is called tubular secretion.

Detailed explanation-2: -The next step in urine formation is tubular secretion. Here, tubular cells secrete substances like hydrogen ions, potassium ions, etc into the filtrate. Through this process, the ionic, acid-base and the balance of other body fluids are maintained. The secreted ions combine with the filtrate and form urine.

Detailed explanation-3: -Tubular secretion-The filtrate absorbed in the glomerulus flows through the renal tubule, where nutrients and water are reabsorbed into capillaries. At the same time, waste ions and hydrogen ions pass from the capillaries into the renal tubule. This process is called secretion.