AI Prompt: Subject: Scientific 3D visualization, wide shot from the POV of a red blood cell entering a massive, cavernous heart chamber (atrium). Action: The cell is propelled into a vast open space by a powerful jet of plasma. In the center, a gigantic, translucent mitral valve structure opens rhythmically like a massive biological gate. Physics: Intense turbulent fluid dynamics, swirling particles, the cell spins gently in the current. Lighting: Dramatic volumetric lighting shafts piercing through the chamber walls, illuminating the valve in a translucent white and red palette. Style: High-end medical CGI, cinematic scale, 8k resolution, serene but powerful atmosphere. Audio: Loud, resonant, deep mechanical thumping of the heartbeat, rushing water sound with echo.