Diagram of the Lungs. Introduction to diagram of the lungs. Lungs are large cone shaped organs located either side of the heart and human has two lungs, a right and a left and are not identical to each other as right lung is slightly larger than the left.iagram of the Lungs-Alveoli. The trachea divides into the two major bronchi, one for each lung. The bronchi then split in to bronchioles which go deeper in to the lungs. The bronchioles further divides to become terminal bronchioles that will then divide again to form respiratory bronchioles.