PrepBharat

1. Arrange the following in the order of increasing volume
1. Tidal volume
2. Residual volume
3. Expiratory reserve volume
4. Inspiratory reserve volume
a) 1 < 2 < 3 < 4
b) 1 < 4 < 3 < 2
c) 1 < 3 < 2 < 4
d) 1 < 4 < 2 < 3

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2. The largest quantity of air that can be expired after a maximum inspiratory effort is
a) Residual volume
b) Tidal volume
c) Vital capacity
d) Total lung volume

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3. The vital capacity of adult human lungs is equal to
a) The maximum volume of air a person can breathe out after a forced inspiration.
b) The maximum volume of air a person can breathe in after a forced expiration.
c) ERV + TV + IRV
d) All of these

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4. Functional residual capacity can be represented as
a) TV + ERV
b) ERV+ RV
c) RV + IRV
d) ERV + TV + IRV

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5.The volume of air involved in breathing movements can be estimated by using a ________ which helps in clinical assessment of pulmonary functions
a) Osmometer
b) Potometer
c) Spirometer
d) Sphygmomanometer

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6.A spirometer cannot be used to measure
a) IC
b) RV
c) ERV
d) IRV

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7. Inspiratory air in lungs ultimately reaches
a) Trachea
b) Alveoli
c) Bronchi
d) Bronchioles

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8. Which is not true?
a) \[pCO_{2}\] of deoxygenated blood is 95 mm Hg.
b) \[pCO_{2}\] of deoxygenated blood is 40 mm Hg.
c) \[pO_{2}\] of deoxygenated blood is 104 mm Hg.
d) \[pO_{2}\] of oxygenated blood is 95 mm Hg.

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9. Which of the following factors affect the rate of diffusion of gases?
a) Partial pressure/concentration gradient of diffusing gases
b) Solubility of gases
c) Thickness of diffusion membrane
d) All the above

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10. Lung alveoli of mammals have a thin wall composed of
a) Simple cuboidal epithelium
b) Simple squamous epithelium
c) Stratified cuboidal epithelium
d) Stratified squamous epithelium

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