Question

which of these is the correct sequence of the processes that occur in human nephrons? a urine formation, reabsorption and secretion, filtration b reabsorption and secretion, filtration, urine formation c filtration, reabsorption and secretion, urine formation d none of the above

Explanation:

The nephron is the functional unit of the kidney. The first step in urine formation is filtration in the glomerulus. Then, reabsorption (of useful substances like glucose, water, ions) and secretion (of waste like creatinine, drugs) occur in the tubules. Finally, urine is formed.

Answer:

C. Filtration, reabsorption and secretion, urine formation