[MCQ] Disturbances of Respiratory Function- Part 1

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Disturbances of Respiratory Function- Part 1 | Disturbances of Respiratory Function- Part 2 | Disturbances of Respiratory Function- Part 3| Disturbances of Respiratory Function- Part 4

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. 25–75% 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. Vital capacity (VC) is a sum of ?
A. IC – VT

B. IC + VT
C. IC + ERV
D. IC – ERV
13.  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

14.  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)

15.  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
16.  Which of the following respiratory functions cannot be measured by a spirometer ?
A. VC
B. ERV
C. IC
D. Residual Volume (RV)
17.  Which of the following respiratory functions cannot be measured by a spirometer ?
A. VC
B. ERV
C. IC
D. Functional Residual Capacity (FRC)
18.  Which of the following respiratory functions cannot be measured by a spirometer ?
A. VC
B. ERV
C. IC
D. Total Lung Capacity (TLC)

19.  Helium dilution & body plethysmography are used for estimating ?
A. VC
B. ERV
C. IC
D. RV
20. Helium dilution & body plethysmography are used for estimating ?
A. VC
B. ERV
C. IC
D. TLC
21.  Helium dilution & body plethysmography are used for estimating ?
A. VC
B. ERV
C. IC
D. FRC

22.  Normal value for the ratio FEV 1 / FVC is ?
A. 0.25 to 0.50
B. 0.50 to 0.75
C. 0.75 to 0.80
D. 0.80 to 1.00