Question

Dialysis machine is also called:

• A. Artificial lung
• B. Artificial kidney
• C. Artificial heart
• D. Artificial brain

Answer 1

The correct option is B Artificial kidney

An artificial kidney is a device that helps in cleaning the blood of a patient whose kidneys have failed to perform their functions.

In this procedure, blood drained from an artery is pumped into a dialysing unit. The unit contains coiled cellophane tubes surrounded by dialysing fluid. The fluid has the same composition as that of the blood except for the nitrogenous wastes. The semi-permeable cellophane membrane of the tube allows the passage of molecules based on concentration gradient. As nitrogenous wastes are absent in the dialysing fluid, these substances freely move out, thereby clearing the blood. The cleared blood is pumped back to the body through a vein.

So, the correct answer is oprion B