The amount of the original filtrate volume which is reabsorbed by the time the tubular fluid enters the Henle's loop is approximately (in $\%$)

The high threshold substances are

Cuboidal epithelium with brush border of microvilli is found in:

Which process is responsible for the excretion of drugs and toxins from the blood into the filtrate?

In the kidney,glucose is mainly absorbed in

Statement $I$: Collecting duct of kidney extends from the cortex to the inner parts of medulla.
Statement $II$: Large amount of water could be reabsorbed from collecting duct to form a concentrated urine.