Human Heart Anatomy Diagram - Blood Flow and Structure #1995427 (License: Personal Use)

This grayscale pencil sketch depicts the human heart in anatomical detail, emphasizing the four chambers, major arteries (aorta, pulmonary artery), and veins (superior/inferior vena cava, pulmonary veins). Arrows indicate the direction of blood flow through systemic and pulmonary circuits, with shading used to convey depth and muscle texture. The artistic style balances scientific accuracy with educational clarity.

Used in medical education websites, anatomy textbooks, or patient-facing health resources to explain cardiac function and circulation. Matches user intent for learning heart structure, preparing for exams, or visualizing how blood moves through the cardiovascular system.