Human Circulatory System Diagram - Heart and Blood Vessel Overview #2368764 (License: Personal Use)

This hand-drawn diagram depicts the human circulatory system, emphasizing the central role of the heart (shown in red) and the network of arteries and veins extending to the limbs, head, and torso. The red lines indicate oxygenated blood pathways, while the black silhouette provides anatomical context without distracting detail. It serves as an accessible educational tool for introductory anatomy or physiology lessons.

Used on educational websites, medical blogs, or classroom resources to explain cardiovascular anatomy; targets users seeking basic understanding of how blood circulates through the human body.