Related Questions

The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?
A Epithelial tissue
B Connective tissue
C Muscular tissue
D Nervous tissue
Surfactant of lung alveoli
A Contains phospholipids
B Prevents oedema formation in the alveolar wall
C Stabilizes the size of an alveolus
D Reduce surface tension by approximately 30%
E Produces a mononuclear layer
The surfactant lining the fluid of lung alveolar epithelium decreases the
A Work of breathing
B Surface tension of the fluid
C Elasticity of the lungs
D Compliance of the lungs
E Pulmonary capillary blood flow
If L is total length of a canal in kilometers, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
A $$1000\,{\text{PLC}}$$
B $$\frac{{{\text{PLC}}}}{{1000}}$$
C $$\frac{{{\text{PL}}}}{{1000{\text{C}}}}$$
D $$\frac{{{\text{PC}}}}{{100{\text{L}}}}$$
Surfactant in alveoli
A Helps to prevent pulmonary edema
B Is decreased in cigarette smokers
C Is influenced by glucocorticoids
D Promotes alveolar collapse
E Spread beneath the alveolar epithelium
Surfactant lining the fluid on alveolar epithelium
A Prevents the collapse of the alveoli
B Increases the compliance of the lungs
C Reduces the surface tension of the alveolar fluid
D Increases the elastic recoil pressure of alveoli
E Increases the work of breathing
The lung alveoli
A Are connected to each other to equalize air pressure
B Need to reduce their surface tension to prevent collapse
C Are present throughout the respiratory part of the bronchial tree
D Are lined by larger number of type I pneumocytes than type II pneumocytes
E Have epithelium without basal lamina
Many more people who smoke develop lung cancer than do those who do not smoke. In the face of this evidence, how could a cigarette company representative argue against the conclusion that cigarette smoking cause lung cancer? To answer to the question, the representative could most likely say that
A Many things might cause cancer.
B A single cause may be reponsible for both smoking and cancer.
C People have the right to endanger themselves if they choose to do so.
D People may breathe die, but no one accuses breathing of causing death.
While standing, compared to the upper part of the lung, the lower portion of the lung has
A Higher ventilation
B Larger compliance
C Larger size of the alveoli
D Higher ventilation-perfusion ratio
E Higher alveolar PO2
Compared to obstructive lung disease restrictive lung disease has lower
A Functional residual capacity
B Total lung capacity
C Compliance of the lungs
D FEV1/FVC %
E Peak expiratory flow rate (PEF

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