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.Management Sciences
Category: Respiratory System
Smoking causes_____________?
A. Ciliary motility
B. Cellular hyperplasia
C. Mucous secretion
D. All of the above
Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT_______________?
A. Increased 2,3 BPG
B. Increased temperature
C. Increased concentration of carbon – di – oxide
D. Increased concentration of oxygen
Surfactant is secreted by_____________?
A. Pnemocyte I
B. Pnemocyte II
C. Goblet cells
D. Pulmonary vessels
The transport of CO is diffusion limited because_______________?
A. Bind avidly with Hb
B. Partial pressure of CO is less
C. CO is less absorbed in water
D. Alveolar membrane is less permeable
In which of the following diseases would you expect to find an increase in thickness of the respiratory membrane ?
A. Emphysema
B. Asthma
C. Pulmonary artery thrombosis
D. Skeletal abnormalities of the chest
The approximate amount of air left in the lungs after maximal forced expiration in a normal woman______________?
A. 0.5 L
B. 2.0 L
C. 1.1 L
D. 1.8 L
Inability of exchange of oxygen through lung tissue if known as____________?
A. Anoxic anoxia
B. Anoxia
C. Histotoxic hypoxia
D. Ischemic hypoxia
Vital capacity is decreased, timed vital capacity (FEV 1.0 %) is normal in______________?
A. Bronchial asthma
B. Scoliosis
C. Chronic bronchitis
D. Acute bronchitis
Which of the following statements about pulmonary surfactant is false ?
A. It is secreted by Type II pneumocytes
B. It contains lecithin and sphingomyelin
C. It increases surface tension
D. It prevents collapse of smaller alveoli
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