The presence of $RBC$ in urine is known as:

The accumulation of urea in the blood due to kidney failure is known as........

During the hemodialysis process:
$I.$ Blood is drained from a convenient artery and an anticoagulant (heparin) is added.
$II.$ Removal of nitrogenous waste from the blood occurs.
$III.$ Blood is passed through a coiled porous cellophane membrane tube bathing in dialysis fluid.
$IV.$ Blood is mixed with anti-heparin and passed into a vein.
Arrange the steps in the correct sequence.

Isothenuria is

Correct the statement given below by choosing the right option shown in the bracket:
Skin and eyes turn yellow in infection of (liver/stomach).

Describe disorders related to the excretory system.