test

1. Respiratory system
MCQ’s

2. 1. The normal respiratory rate is:
a) 6-8 cycles/min
b) 12-16 cycles/min
c) 30-40 cycles/min
d) 72 cycles/min

3. 2. Thickness of respiratory membrane:
a) 0.6 µ
b) 2.5 µ
c) 0.6 mm
d) 2.5 mm

4. 3.Normal tidal volume is:
a) 300 mL
b) 500 mL
c) 700 mL
d) 1000 mL

5. 4.Normal inspiratory reserve volume is:
a) 1000 mL
b) 2000 mL
c) 3000 mL
d) 4000 mL

6. 5. Inspiratory capacity is:
a) TV+IRV
b) TV+ERV
c) VC+RV
d) ERV+RV

7. 6. The maximum amount of air expelled from
lungs after maximum inspiration is called:
a) Functional residual capacity
b) Tidal volume
c) Vital capacity
d) Inspiratory capacity

8. 7. Muscles of inspiration include all except:
a) Diaphragm
b) External intercostals
c) Sternocleidomastoid
d) Internal intercostals

9. 8. Normal intrapleural pressure is
a) -11 to -14 cm of water
b) -5 to -8 cm of water
c) +3 to +5 cm of water
d) +7 to +11 cm of water

10. 9. Normal FEV1 is:
a) 63%
b) 73%
c) 83%
d) 93%

11. 10. Lung volumes and capacities are measured
by:
a) Spirometer
b) Sphygmomanometer
c) Stethoscope
d) stethograph

12. Q1. draw a well labelled diagram:
a) Change in intrapleural pressure and
intrapulmonary pressure with respiratory
cycle
b) Compliance of lungs alone
Q2. write a short note on hyaline membrane
disease
Q3. lung compliance increases in old age.
explain