Collapsed Lung due to Injury Anatomy
To better understand traumatic pneumothorax, it helps to understand the anatomy of the lungs.
Inside the chest, the windpipe, or trachea, divides into two smaller tubes: the right bronchus and the left bronchus. The right bronchus enters the right lung and the left bronchus enters the left lung. The right bronchus and left bronchus branch into smaller and smaller tubes.
The smallest tubes, called bronchioles, end in tiny air sacs, called alveoli. Blood flows very close to the walls of the alveoli. Oxygen and carbon dioxide pass between the air and the bloodstream through the wall of the alveoli.
- Aihara R, Millham FH, Blansfield J, Hirsch EF. Emergency room thoracotomy for penetrating chest injury: effect of an institutional protocol. J Trauma. 2001 Jun;50(6):1027-30. 
- Ferguson M, Luchette FA. Management of blunt chest injury. Respir Care Clin N Am. 1996 Sep;2(3):449-66. 
- Nagy KK, Krosner SM, Roberts RR, Joseph KT, Smith RF, Barrett J. Determining which patients require evaluation for blunt cardiac injury following blunt chest trauma. World J Surg. 2001 Jan;25(1):108-11. 
- Sartorelli KH, Vane DW. The diagnosis and management of children with blunt injury of the chest. Semin Pediatr Surg. 2004 May;13(2):98-105. 
- Wanek S, Mayberry JC. Blunt thoracic trauma: flail chest, pulmonary contusion, and blast injury. Crit Care Clin. 2004 Jan;20(1):71-81.