Breath and Flow: Understanding Human Respiration and Excretion (silent, 1930s)

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 and physiology. Beginning with the organs of respiration, it highlights the structure and function of the nose, larynx, trachea, bronchi, and lungs, including an in-depth look at healthy and diseased lung function. The film transitions to the excretory system, showcasing kidneys, ureters, the bladder, and the urethra, emphasizing the process of waste elimination. Through graphic dissections and animations, it explains urinary function, kidney stones, and the impact of substances like alcohol on these vital systems. Concluding with health advice, it underscores the importance of maintaining proper respiratory and excretory health.

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