Biology / Unit 13 Bio 3175 worked example, 60 to 90 seconds
Tracing Gas Exchange Across the Pulmonary-Systemic Loop, Worked
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The idea
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.
Where people slip
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.
Your place on the trail
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