Did you know pulmonary veins carry oxygen-rich blood?
In this Body Spectra 3D medical animation, follow blood from the lungs through the pulmonary veins and into the left atrium of the heart.
Most people have four major pulmonary veins—two from each lung. They return oxygen-rich blood after gas exchange takes place in the lung capillaries surrounding the alveoli.
Remember: ✅ Veins carry blood toward the heart. ✅ Arteries carry blood away from the heart. ✅ Vessel names are based on blood-flow direction, not simply oxygen content.
Watch this short anatomy journey, then share the surprising fact with someone who loves science!
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