Which of the following pair of amino acids are removed by the ornithine cycle?

Which of these hormones activates the adrenal cortex to release aldosterone?

In most of the invertebrates, kidneys are present for excretion.

The descending loop of Henle is impermeable to water.

Osmoreceptors in the body is not directly activated by which of the following?

The peritubular capillaries emerge from which of the following?

Juxta-medullary nephrons constitute what percentage of the total nephrons?

What happens due to the increase of sodium ions in the blood?