The Heart and Circulatory System (detailed) — free printable diagram

About this illustration

A detailed, labelled diagram of the human heart and circulatory system. The left side shows a cross-section of the heart with all four chambers, major valves, and connecting vessels colour-coded blue (deoxygenated) and red (oxygenated). The right side shows a full-body schematic illustrating pulmonary circulation (heart to lungs) and systemic circulation (heart to body). A key explains colour and arrow conventions.

How to use

1. 1Right-click the image and choose “Save image as”, or use the download button.
2. 2Use it in your classroom worksheets, slides or printables — free under CC BY-NC 4.0.
3. 3Attribute as “Image by Kuraplan” or link back to kuraplan.com. Not for commercial resale.