Physiology Paial pressure of O2 at atmospheric pressure of 760 mm of Hg A 76 mm of Hg B 160 mm of Hg C 120 mm of Hg D 140 mm of Hg 💡 Explanation Paial pressure of O2 at atmospheric pressure of 760 mm of Hg ✓ Correct Answer: B. 160 mm of Hg