Clinical Case

A 19 year old man is admitted to the emergency room with a stab wound to the lateral aspect of his left thorax along the midaxillary line (i.e. along the coronal plane through the mid-thorax). Palpation reveals that the puncture passes through the sixth intercostal space. It is obvious that the blade has punctured the lung, causing a pneumothorax.
Part A. Moving from superficial to deep, identify all of the tissue layers that the blade has likely punctured before reaching the lung. Your answer should be detailed and specific.
Part B. Which lobe is likely to have been damaged? Why?