$A$ kidney stone is:

$A$ person suffering from diabetes insipidus will pass what amount of urine per day?

Blood is drained from a convenient $P$ of a patient and is pumped into a dialyzing unit after adding $Q$. After purification,$R$ is added to the blood,and it is returned to the body through $S$.
$\quad \quad P\quad \quad Q\quad \quad R\quad \quad S$

The disease caused by the deficiency of $ADH$ is:

The accumulation of urea in the blood is called .......

Presence of ketone bodies in urine is indicative of...