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 ...

This system ... human shape. Cardiovascular system - OCR The cardiovascular system is made up of three main parts - the heart, the blood vessels and the blood that flows through them. Respiratory ...

In the high-stakes battle against respiratory infections from avian flu to COVID-19 scientists have uncovered an unlikely ...