#renal physiology
- Ammoniogenesis — The biochemical and physiological process of synthesis and production of ammonia or ammonium ions by the body's cells, located predominantly within the tubular cells of the kidneys. This cellular mechanism plays a fundamental role in maintaining the body's acid-base balance, allowing the excretion of excess hydrogen ions by binding them as ammonium in the urine.
- Azoturia — The quantitative elimination of nitrogen or its nitrogenous compounds (especially urea, uric acid, and creatinine) through urine within a specified timeframe. Clinical evaluation of azoturia is a fundamental indicator in analyzing the body's nitrogen balance, reflecting the protein catabolism rate and renal filtration efficiency.