Ralph Hutchings Portfolio

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Resin cast of the human lungs and bronchial tree. The airways of each lobe of the lung have been cast in a different color. The lungs take in around 0.5 liters of air in every breath, with around 12 breaths per minute at rest. The lungs have a large network of airways, which gives them a huge surface area for oxygen to diffuse into the blood and carbon dioxide to diffuse out.