NEETZoologyExcretory Products and their Elimination
Which one of the following statements in regard to the excretion by the human kidneys is correct?
Options
- AAscending limb of loop of Henle is impermeable to electrolytes
- BDescending limb of loop of Henle is impermeable to water
- CDistal convoluted tubule is incapable of reabsorbing HCO3
- DNearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules
Correct answer
D. Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules
Step-by-step solution
A comparison of the volume of the filtrate formed per day 180 litres per day with that of the urine released 1.5 litres, suggests that nearly 99 per cent of the filtrate has to be reabsorbed by the renal tubules. This process is called reabsorption. The tubular epithelial cells in different segments of nephron perform this either by active or passive mechanisms. For example, substances like glucose, amino acids, Na+ , etc.