A. Troponin
B. Myosin
C. Sarcoplasmic reticulum
D. Both A&B

A. Bicarbonate
B. Plasma
C. Whole blood
D. None of above

A. 98%
B. 2%
C. 1%
D. None

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