A. >68%
B. >78%
C. >88%
D. >98%

A. Po2
B. Pco2
C. Both a b
D. None of these

A. 50 mm Hg
B. 100mm Hg
C. 150 mm Hg
D. 200 mm Hg

A. Alveolar capillaries
B. Systemic capillaries
C. Both a b
D. None of these

A. Anterior serrati
B. Scalene
C. External intercostal
D. Abdominal recti

A. They provide structural support to type 1 cells
B. They secrete surfactant, a chemical that helps the alveoli stay open
C. They also participate in gas exchange
D. All of these

A. Alveolus
B. Bronchus
C. Bronchiole
D. Trachea

A. Atmospheric air and alveoli
B. Alveoli and oxygenated blood
C. Alveoli and deoxygenated blood
D. Deoxygenated blood and tissues

A. 10X
B. 20X
C. 30X
D. 40X

A. Carboxyhemoglobin
B. Methemoglobin
C. Reduced hemoglobin
D. Carbaminohemoglobin