BIOC34H3 : study guide
Document Summary
Lungs are lobular: left lung: has 2 lobes and greater capacity. The cardiac notch is the space present to accommodate the heart: right lung: has 3 lobes but lesser capacity due to the position of the liver below it. However, it is wider than the left lung: as you move down the respiratory tract, the amount of cartilage decreases. If came off lower closer to diaphragm, spinal injury would make someone unable to breathe: phrenic nerve takes commands from brain stem www. notesolution. com. Int ra-alveolar pressure: refers to pressure in the lungs. Slide 16: set at same level as atmospheric pressure at rest so 0 mmhg (changes with inspiration and expiration) difference between atmospheric pressure and alveoli pressure drive air flow into/out lungs. Slide 18: always higher than interpleural space/pleural space pressure, t ranspulmonary pressure is the driving force for lung expansion, t ranspulmonary pressure = p alveoli p interpleural space, pneumothorax: condition in which air goes into chest cavity.
