Question

Assertion: Nitrogenous waste from arterial blood is removed, which passes through a dialyzer unit.
Reason: The Arterial blood of the patient and dialysing liquid are made to flow on two sides of a permeable membrane.

• A. Both the assertion and reason are true and the reason is the correct explanation for assertion.
• B. Both the assertion and reason are true and the reason is not the correct explanation for assertion.
• C. Assertion is true but the reason is false.
• D. Both the reason and assertion are false.

Answer 1

The correct option is A Both the assertion and reason are true and the reason is the correct explanation for assertion.

When the kidneys are completely damaged, the patient receives hemodialysis.Blood from the artery is pumped into the tube that is through the dialyzer, which is filled with dialysis fluid. It contains the same quantity of electrolytes and nutrients as normal plasma. Cellophane tube is kept in the dialysis fluid. Molecules of waste substances such as urea, ammonia diffuse into the dialysis fluid. Now, the blood is returned to patient’s body through the vein.