Breath and Heart Beat

Duration: 13 min

Genre: Health, Physiology

Creator: Bray

Format: 16mm

Color: B&W

Sound: Silent

Description: Combines two well-known Bray subjects. (a) How We Breathe, showing form, action, and function of human lungs, and the purification of the blood. (b) Action of the Human Heart, with clear animation explaining the complete circulatory system, and the pumping action of the heart valves.

Metadata Source:Bell & Howell Filmosound Library Catalog of Educational Motion Pictures, 1942