Final answer:
The term for fully modeled and rendered objects stored in video memory is 'sprites.' Sprites are used to effectively manage graphics rendering for animations in video games.
Step-by-step explanation:
The blank in the question should be filled with sprites. Sprites are two-dimensional images or animations that are integrated into a larger scene usually in a 2D video game. They can be used to create complex animations and effects without the need to draw every frame manually, saving on processing power and memory. Nowadays, 3D models can also be used as sprites, but they are pre-rendered into 2D images from different angles to be displayed on the screen. These are stored in the video memory for quick access by the computer's graphics hardware when rendering a scene. This process makes it possible to display detailed objects without the computational cost of rendering them in real time.