A comprehensive overview of respiratory physiology and pathophysiology, examining the structure and function of the respiratory system, common upper and lower respiratory tract disorders, and the underlying mechanisms behind these conditions.

It explores the causes, clinical manifestations, diagnostic tests, and treatment options for various respiratory ailments, including acute rhinitis, pharyngitis, sinusitis, tonsillitis, epiglottitis, laryngitis, tracheitis, acute bronchitis, pneumonia, lung abscess, and tuberculosis. It also emphasizes the importance of understanding ventilation and perfusion dynamics, the role of chemoreceptors in breathing control, and the impact of immunosuppression on respiratory health.