As a bioengineer, you have been asked to create a device to test new drug treatments for heart failure. Your service should mimic the failing human heart as closely as possible while still being practical to use in a lab. Using Diagrams, illustrate the important features of your device and explain how it may allow better testing of potential new drugs compared to standard 2D cell cultures. Specifically address how your design mimics the biochemical environment of heart muscle cells (60% of the mark). Overall, the goal is to assess if your device better predicts if a new drug may help heart failure patients, compared to 2D cell culture. Your diagrams should illustrate practical features that recreate the complex environment of the human heart on the atomic, microscopic, and macroscopic levels (40% of the mark).