You are flying at 34,000 feet and are breathing 100% oxygen (no pressure breathing). The total atmospheric pressure is 187 mmHg. What is the pressure of oxygen in your lungs, and where is your body physiologically speaking?
A) 47 mmHg, 10,000 feet
B) 137 mmHg, 20,000 feet
C) 167 mmHg, 25,000 feet
D) 187 mmHg, 34,000 feet
