Explore the intricacies of lung pressures in this comprehensive video on pulmonary physiology. Delve into the concepts of intrapulmonary, intrapleural, and transmural pressures, understanding their roles in respiratory mechanics. Learn about Boyle's Law and its application to lung function, analyze pressure graphs, and discover how negative intrathoracic pressure affects venous return to the heart. Examine the dynamics of intrapleural pressure during inspiration and investigate scenarios where it may become positive. Gain a thorough understanding of transmural pressure and its significance in lung physiology. Conclude with a summary that reinforces key concepts, enhancing your knowledge of respiratory physiology for medical studies or professional development.