1.   Assaulted blood vessels often rupture, causing blood to seep into the lung cavities.

2.   Mammals have a diaphragm muscle that causes the lung cavity to expand and draw in air.

3.   Douste-Blazy suffered a broken rib in the attack and doctors were forced to drain a lung cavity which was also pierced.

4.   The minister suffered a broken rib in the attack and doctors were forced to drain a lung cavity which was also pierced.