This 1930s educational film provides a detailed exploration of the respiratory and excretory systems, combining live-action demonstrations, animations, and intertitles to illustrate human anatomy ...

Figure 3 - Schematic diagram of lung anatomy with cross-sections of bronchi, bronchioles alveolar ducts, and alveoli.

Sex differences in airway size are not innate, but likely develop because of hormonal changes around puberty, reports a new study by the University of Waterloo.

In 2015, South Korea experienced an outbreak of Middle East respiratory syndrome, or MERS. Between May and July, 186 people contracted the MERS virus; 38 eventually died. This diagram shows how ...