Human Respiratory System Anatomy Diagram - Trachea, Bronchi, and Lung Infection #215269 (License: Personal Use)

The image is a side-profile anatomical illustration of the human upper and lower respiratory tract, clearly labeling the trachea, bronchi, and both lungs. One lung is marked “Infected lung” and shaded red to denote inflammation or infection such as pneumonia, while the other remains pink to represent healthy tissue. The branching bronchial tree is shown in detail, illustrating airway distribution.

Used in medical textbooks, patient education materials, and health websites to explain respiratory anatomy and conditions like pneumonia, bronchitis, or COPD. Matches user intent for learning about lung infections, anatomy study, or symptom visualization.