Part 6 · Respiratory Physiology
Same concept, other depth: Foundation →
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Arterial CO₂ content ≈ 48 mL/dL; venous ≈ 52 mL/dL — only ~4 mL/dL is exchanged. Of the CO₂ carried: HCO₃⁻ ~70%, carbamino (on N‑terminal globin amino groups, not haem) ~20–25%, dissolved ~5–10% (solubility 0.03 mmol/L/mmHg; ~20× O₂).
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