This video gives a conclusive account on the pressures of the lungs that make inspiration and expiration possible. The detailed explanation proves to be really helpful in grasping the concepts surrounding this topic. Timeline: 00.00 Opening Remarks 00:20 Introduction 00:36 Overview of types of pressures 01:35 Intrapulmonary Pressure 04:12 Reference to Inspiration and Expiration 05:45 Intrapleural Pressure 08:15 Reference to Inspiration and Expiration 10:20 Intrapleural Pressure (Continued Explanation) 19:57 Transpulmonary Pressure 21:05 Reference to Inspiration and Expiration 23:02 Closing Remarks