The message from the matrix—should we listen more closely?

The lung is the primary gas exchange organ of the human body. To achieve an effective gas exchange, the lung structure is morphologically divided into a micro-porous, parenchymal compartment (alveoli) and connecting airways. These connecting airways, the bronchi, starting from the alveoli upward, grow in diameter to finally form the bronchial tree and conjoin into the trachea.