What percentage of the total blood pumped by the heart goes to the kidneys?

Which of the following organs is not present in a pair in the human body?

In the diagram of the human excretory system given below,different parts have been indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts they represent.

Read the following four statements $(A-D)$ and select the correct ones:
$(A)$ The medulla of the kidney is divided into a few conical masses projecting into the calyces.
$(B)$ The cortex of the kidney extends in between the medullary pyramids as renal columns called columns of Bertini.
$(C)$ The kidneys are situated in the ventral part of the thoracic region in the human body.
$(D)$ Each kidney of an adult human measures $10-12 \ cm$ in length,$5-7 \ cm$ in width,$2-3 \ cm$ in thickness,with an average weight of $120-170 \ gm$.

The diagram of a nephron is given below. Which of the following structures together form the renal corpuscle (Malpighian body)?

What are the correct dimensions (Length $-$ Width $-$ Thickness) for a kidney of an adult human?