Biology - Excretory Products and their Elimination Question with Solution | TestHub
MatchList IwithList II
| List I (Structure related to haemodialysis) | List II (feature) |
|---|---|
| (A). Cellophane tube | (I). Added to blood in cellophane tube |
| (B). Dialyzate | (II). Acts as semipermeable membrane |
| (C). Heparin | (III). Isosmotic to normal blood plasma |
| (D). Anti-heparin | (IV). Added to filtered blood returning to the vein |
Choose thecorrectanswer from the options given below:
Options:
Answer:
Solution:
In haemodialysis, blood is drained from a convenient artery and pumped into a dialysing unit after adding an anticoagulant like heparin. Thus, Heparin matches with being added to blood entering the cellophane tube.
The dialysing unit contains a coiled cellophane tube which acts as a semipermeable membrane, allowing the passage of molecules based on the concentration gradient.
The cellophane tube is surrounded by dialysing fluid (dialyzate) which has the same composition as that of plasma except for nitrogenous wastes, making it isosmotic to normal blood plasma.
The cleared blood is pumped back to the body through a vein after adding anti-heparin to it to restore normal coagulation.
Therefore, the correct matching is (A) - (II), (B) - (III), (C) - (I), (D) - (IV).
Answer: (A) - (II), (B) - (III), (C) - (I), (D) - (IV)
