Question

One of the following statements w.r.t excretion by the human kidneys is correct:

• A. Ascending limb of loop of Henle is permeable to water.
• B. Distal convoluted tubule is incapable of reabsorbing Na+ ions.
• C. Nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules.
• D. Descending limb of loop of Henle is permeable to electrolytes.

Answer 1

The correct option is C

Nearly 99% of the glomerular filtrate is reabsorbed by the renal tubules.

Only about 1% of the glomerular fitrate actually leaves the body because the rest (the other 99%) is reabsorbed into the blood while it passes through the renal tubules and ducts. This is called tubular reabsorption.