A person is suffering from hyper-secretion of aldosterone.The laboratory report of his urine composition will show the absence or very low level of
Correct answer: C. Sodium ions
- A. Glucose
- B. Creatinine
- C. Sodium ions
- D. Phosphate ions
Explanation
The correct answer is sodium ions. Aldosterone is a hormone that promotes the reabsorption of sodium ions from the renal tubules back into the bloodstream, thereby reducing sodium loss in urine. When there is hyper-secretion of aldosterone, this process is enhanced, leading to very low levels of sodium ions in the urine. In contrast, glucose and creatinine levels are affected by different physiological processes and conditions, and phosphate ion levels are regulated by other hormonal pathways, such as those involving parathyroid hormone.
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About Kidney and Urinary System
The kidney and urinary system remove nitrogenous wastes, regulate water and ion balance, and help maintain blood pH through filtration, selective reabsorption and secretion. Questions cover nephron structure, ultrafiltration, the loop of Henle, collecting ducts, urine formation and the roles of ADH and aldosterone, while distinguishing excretion from egestion.
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