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

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 $S$.
$\quad \quad P\quad \quad Q\quad \quad R\quad \quad S$

Diabetes is detected by testing the urine of patients using which of the following?

Describe disorders related to the excretory system.

In a recently found continuous ambulatory peritoneal dialysis $(CAPD)$,the dialysing membrane used is:

In haemodialysis, . . . . . . acts as a semipermeable membrane which is immersed in dialysate.