1. CO 2 Production Respiratory Quotient = O 2 Utilization P AO = P IO - (P ACO /R) 2 2 2 P AO = Alveolar oxygen tension 2 P ACO = Alveolar carbon dioxide tension 2 P IO = inspired oxygen tension 2

2. Proximal tubule, thick ascending loop of Henle, early distal tubule

4. 1 inch = 2,54 cm; 1 foot (ft) = 12 inches = 30,48 cm Altitude m ft Pressure mmHg Partial O 2 Pressure 0 0 760 159 1 000 3 281 674 142 2 000 6 562 596 125 3 000 9 843 526 111 4 000 13 123 462 97 5 000 16 404 405 85 6 000 19 685 354 74 7 000 22 966 308 65 8 000 26 247 267 56 9 000 29 258 231 49

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