The collecting duct extends from the cortex of the kidney to which of the following parts?

Which of the following is not situated in the cortical region of the kidney?

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

If the loop of Henle is removed, hypertonic urine will be produced.

Which of the following organisms is not ureotelic?

Malpighian tubules are the excretory structures of which of the following?

Which of the following is not the major form of nitrogenous wastes?

Which of the following initiates the voluntary signal given by CNS?