_____________ tubes are good substitute for human blood vessels on heart by-pass operation?
Correct answer: C. Teflon/Dacron
- A. PVC
- B. Polythene
- C. Teflon/Dacron
- D. Polystyrene
Explanation
Dacron, a polyester, and Teflon, PTFE, are chemically resistant materials used in vascular grafts and can substitute for blood-vessel sections. The other listed plastics are less suitable for this application.
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