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Tracing Gas Exchange Across the Pulmonary-Systemic Loop, Worked

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This procedure traces one gas-exchange cycle from inhalation through tissue delivery and back, drawing together this chapter's breathing-mechanics and blood-transport atoms.

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Assuming oxygen and carbon dioxide travel by the same transport mechanism is the error here — oxygen rides mostly on hemoglobin directly, carbon dioxide mostly as a dissolved ion, and the two gradients operate independently at every step.

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