How Breathing Works: Inhalation vs Exhalation Diagram #99124 (License: Personal Use)

This side-by-side anatomical illustration depicts the human respiratory process: on the left, inhalation occurs as the diaphragm contracts and flattens, drawing air into the lungs via the trachea; on the right, exhalation follows as the diaphragm relaxes upward, compressing the lungs and expelling air. Key structures-including the nasal cavity, pharynx, larynx, trachea, bronchi, lungs, and diaphragm-are color-coded to highlight functional relationships during ventilation.

Used in educational health content, biology textbooks, patient brochures, or pulmonary rehabilitation materials to explain basic respiratory physiology; matches user intent for learning how breathing works or understanding conditions like asthma or COPD.