Which of the following is $NOT$ a part of the renal pyramid?

The figure shows the human urinary system with structures labelled $A$ to $D$. Select the option which correctly identifies them and gives their characteristics and/or functions.

The basic functional unit of the human kidney is:

Which of the following enters the hilum of the kidney?

Which of the following structures are situated in the cortical region of the kidney?
$I.$ Malpighian corpuscle
$II.$ $PCT$ (Proximal Convoluted Tubules)
$III.$ $DCT$ (Distal Convoluted Tubules)
$IV.$ Loop of Henle
$V.$ Collecting duct

How is the glomerulus formed?