The course will consist of a series of paired lectures covering several topics in pediatric respiratory physiology, reviewing first normal physiologic aspects of a topic and then the companion talk will review pathophysiology relating to a particular pediatric respiratory disease that highlights when the normal physiology goes awry. An interactive format, using questions from the speakers and audience touch pads to give answers will be used to enhance audience participation, and to allow the participant to understand key concepts or to identify areas requiring additional study.