Respiratory (9)

Spirometry graph with lung volume on the Y-axis (0-6000mL) and time on the X-axis. A black waveform displays breathing volume changes, marked by peaks and troughs. Horizontal colored bands define lung volumes: light red (Inspiratory Reserve Volume), dark red (Tidal Volume), orange (Expiratory Reserve Volume), and yellow (Reserve Volume). Vertical black lines indicate “Vital Capacity.”