The heart of Dr. Livingston’s puzzles! 
No need to ask the wizard for a heart—make your own!
 
Piece by piece, you’ll begin to see the strong sternum and protective ribs surround the vital organs that supply the body with oxygen. Build the gray trachea as it branches out into the bronchioles and follow the red aorta while it carries blood away from the four-chambered heart. 
 
This 500 piece, 21” puzzle is twice the size of an actual human thorax. With an anatomical reference guide included, learning anatomy has never been so much fun!