In the third volume of Dr. Livingston’s Anatomy Jigsaw Puzzles, you will assemble a cross-cut section of the human body that gives you a clear view of the largest cavity in the body and its major contents. You’ll see how they interlock and overlap with marvelous economy. Piece together the frame of the puzzle and you’ll see how the vital organs are suspended in the abdominal cavity by loose connective tissue called mesentery, a substance that contains blood vessels and nerves, and which also allows the organs to move as necessary.

Fill out the abdominal cavity by assembling the body’s lower digestive tract including the stomach, small and large intestines, and the supportive pancreas, liver, and gallbladder, each an impressive machine in its own right.