Question

Which of the following statement is correct?

(a) movement of waste product molecules from the dialysate to the blood results in cleaning of the blood

(b) movement of waste product molecules from the blood to the dialysate results in cleaning of the blood

(c) movement of waste product molecules from the blood to the dialysate results in impuring of the blood

(d) movement of waste product molecules from the dialysate to the blood results in cleaning of the blood

This question was addressed to me during an interview.

Question is taken from Potentiometric Recorder topic in chapter Recording System of Biomedical Instrumentation

Answer 1

Right choice is (b) movement of waste product molecules from the blood to the dialysate results in cleaning of the blood

To explain: Movement of waste product molecules from the blood to the dialysate results in cleaning of the blood.  The dialysate fluid is free of waste product molecules and, therefore, those in the blood would tend to distribute themselves evenly throughout the blood and the dialysate. All other options are completely wrong.