Question

What does the tubular secretion adds to the glomerular filtrate?

• A. Urea
• B. Uric acid
• C. Ammonia
• D. All the above

Answer 1

The correct option is D All the above

In the kidney, urine is formed by three mechanisms. Glomerular filtration, reabsorption and tubular secretion. The tubular secretion is the process which extracts blood plasma in the peritubular capillaries and secrets them into the tubular fluid in the renal tubule. The substances secreted are Urea, uric acid, and ammonia. Hence tubular secretion adds the urea, uric acid, and ammonia to the glomerular fluid.

So, the correct answer is'All the above'.