Review of Monday's lesson using a classwork activity.
Introduce Boyle's Law which discusses the relationship between pressure of a gas and its volume.
Recall how the Medulla contains respiratory centers which send nerve impulses to the diaphragm and the intercostal muscles.
Outline and discuss the complete physical mechanism of inhalation and exhalation, the movement of the ribs and diaphragm causing a difference in pressure between the atmosphere and the thoracic cavity.
Discuss external and internal respiration, along with the chemical makeup of air.
Present some clinical applications describing asthma, congestive heart failure leading to dyspnea and hypoxia, along with bacterial pneumonia.