← Chapter 22
Anatomy & Physiology · Chapter 22

Lung Volumes

A spirometer traces how much air you move. Quiet breathing uses only a sliver of what your lungs can hold. Tap each volume to see it on the trace.

Tidal volume

volume (mL) over time →
Lung volumesa spirometry trace

Volumes & capacities

📷 Reference image
A real labeled figure to compare with the interactive above.
Lung Volumes reference figure
Lung Volumes — OpenStax, CC BY 3.0 (via Wikimedia Commons)