The document provides information on the anatomy and physiology of the lungs and bronchial asthma. It describes the internal structure of the lungs including the lobes, trachea, bronchi, bronchioles and alveoli. It explains the process of gas exchange that occurs in the alveoli and the protective functions of the lungs. The document then discusses the pathophysiology and diagnostic evaluation of bronchial asthma, including various tests. It concludes by listing some potential nursing diagnoses for a patient with asthma.