Disturbances of Respiratory Function

Disturbances of Respiratory Function

1 What is the approximate lung surface area ?
A. 50 m2
B. 60 m2
C. 70 m2
D. 80 m2


2 The respiratory system includes ?
A. Lungs
B. Neuromuscular system
C. Chest wall (diaphragm & intercostal muscles)
D. All of the above


3 In pulmonary circulation, how many capillaries are present per alveolus ?
A. ~ 100
B. ~ 1000
C. ~ 10000
D. ~ 100000


4 What portion of the fresh air inspired with each breath does not reach alveoli but remains in conducting airways of lung ?
A. ~ 10 %
B. ~ 20 %
C. ~ 30 %
D. ~ 40 %


5 Total ventilation each minute is approximately ?
A. 5 Liters
B. 7 Liters
C. 9 Liters
D. 11 Liters


6 Each breath has a tidal volume of approximately ?
A. 200 mL
B. 300 mL
C. 400 mL
D. 500 mL


7 The volume of gas that is exhaled from lungs in going from TLC to RV is ?
A. Expiratory reserve volume (ERV)
B. Functional residual capacity (FRC)
C. Vital capacity (VC)
D. Tidal volume (VT)


8 FEF25–75% is also called ?
A. Maximal early expiratory flow rate
B. Maximal mid expiratory flow rate
C. Maximal late expiratory flow rate
D. Maximal pan expiratory flow rate


9 Total lung capacity (TLC) is a sum of ?
A. VC + RV
B. VC + FRC
C. VC + ERV
D. VC + IC


10 Total lung capacity (TLC) is a sum of ?
A. VC + ERV
B. VC + FRC
C. FRC + Tidal volume (VT)
D. FRC + IC


11 Total lung capacity (TLC) is a sum of ?
A. VC + ERV
B. VC + FRC
C. IC + ERV + RV
D. FRC + VT


12 Transpulmonary pressure (PTP) refers to ?
A. Alveolar pressure - pleural pressure
B. Pleural pressure - alveolar pressure
C. Endexpiratory - endinspiratory pleural pressure
D. Endinspiratory - endexpiratory pleural pressure


13 Volume of gas in the lungs at the end of a normal exhalation is denoted by ?
A. Tidal volume (VT)
B. Residual volume (RV)
C. Expiratory reserve volume (ERV)
D. Functional residual capacity (FRC)


14 Which of the following respiratory functions can be measured by a spirometer ?
A. Vital Capacity (VC)
B. Expiratory reserve volume (ERV)
C. Inspiratory capacity (IC)
D. All of the above


15 Which of the following respiratory functions cannot be measured by a spirometer ?
A. VC
B. ERV
C. IC
D. Residual Volume (RV)


16 Which of the following respiratory functions cannot be measured by a spirometer ?
A. VC
B. ERV
C. IC
D. Functional Residual Capacity (FRC)


17 Which of the following respiratory functions cannot be measured by a spirometer ?
A. VC
B. ERV
C. IC
D. Total Lung Capacity (TLC)