Did you know that an artery can carry oxygen-poor blood?
Discover the pulmonary artery in this 3D medical animation from Body Spectra. See how blood leaves the right ventricle, travels through the pulmonary trunk, and branches toward both lungs.
Inside the lungs, tiny capillaries surrounding the alveoli enable gas exchange: blood releases carbon dioxide and takes up oxygen before returning to the heart.
Remember: arteries carry blood away from the heart. They are not defined by how much oxygen the blood contains.
Watch until the end to see this incredible journey through the human body.
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