Respiration 3D Medical Animation
Even though we are constantly breathing, we do not often think about what is happening when we do so. This narrated animation describes respiration of the lungs and oxygenation of the blood.
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Allergy 3D Medical Animation
This animation shows the immune system reacting (or overreacting) at the cellular level. It describes what happens when an allergen, like dander or pollen, enters the body. It also shows how some allergy medicines work, like anti-histamines.
How the Body Works : The Respiratory System
The animation explains how the lungs provide oxygen to and remove carbon dioxide from the blood. The specialized anatomy of the air sac in the lung allows the gas exchange to occur efficiently, as discussed and shown in the video.