O₂ & CO₂ Transport

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Last updated 7:22 AM on 8/25/26
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4 Terms

1
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How is oxygen transported in blood?

  • Small amount physically dissolved in plasma

  • Majority bound to hemoglobin

  • Only ≈ 0.3 mL O₂/100 mL arterial blood is dissolved


2
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What determines PaO₂?

  • Physically dissolved oxygen

  • PaO₂ influences how much O₂ binds to hemoglobin


3
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How is carbon dioxide transported in blood?

  • Dissolved in plasma

  • Carbamino compounds bound to hemoglobin

  • Bicarbonate ions


4
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What percentages of CO₂ are transported in each form?

  • ≈5–10% dissolved

  • Smaller percentage as carbamino compounds

  • ≈80–90% as bicarbonate ions