Question

1. using the evidence provided, explain how the structure of the artificial valve allows it to perform the same function as a natural heart valve. include one trade-off involved in selecting the polymer scaffold as the valve material. 1

Explanation:

To answer, first recall natural heart valve function (prevent backflow, open/close with pressure). Artificial valve structure (e.g., flexible polymer scaffold) mimics this—flexes to open/close, controlling blood flow. For trade - off: Polymer scaffolds are biocompatible (good for integration) but may lack long - term durability (e.g., degrade or cause immune response over time) or have lower mechanical strength than natural tissue/certain metals, affecting lifespan or requiring re - surgery.

Answer:

The artificial valve’s polymer scaffold structure is flexible, allowing it to open/close with blood pressure (like natural valves controlling flow/ preventing backflow). A trade - off: Polymer is biocompatible (good for tissue integration) but may have lower long - term durability (e.g., degrades, less mechanical strength than natural tissue/metal, risking re - surgery).