Part of the kidney through which the ureter, blood vessels and nerves enter is

Which one of the following correctly explains the function of a specific part of the human nephron?

What is the structural and functional unit 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

In every adult human kidney,the dimensions are: length $A$ $cm$,width $B$ $cm$,and thickness $C$ $cm$. Identify the correct values for $A-B-C$.

Which blood vessel contains the least amount of urea?