Oxygen is absorbed in the lungs and then transported to all body cells through the bloodstream.
Where is oxygen absorbed during breathing, and how is it transported to the body’s cells?
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Oxygen is absorbed in the lungs and then transported to all body cells through the bloodstream.
Oxygen is absorbed during breathing in the lungs, specifically in the alveoli, small air sacs where gas exchange occurs. Inhaled oxygen diffuses across the thin alveolar membrane into adjacent capillaries, binding to hemoglobin in red blood cells. Hemoglobin then carries oxygen through the bloodstream to body tissues and cells, where it is released to support cellular respiration and energy production.