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How many layers form the diffusion membr...

How many layers form the diffusion membrane ?

A

Thin squamous epithelium of alveoli, basement membrane of bronchioles and basement
substance

B

Thin squamous epithelium of alveoli endothelium of alveolar capillaries and the basement
substance

C

Basement substance, cuboidal epithelium of alveoli and stratified epithelium of bronchiole

D

Ciliated epithelium of trachea, endothelium of capillaries and basement substance

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-BREATHING AND EXCHANGE OF GASES -ASSIGNMENT SECTION - B
  1. Volume of air which cannot be measured by spirometer

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  2. What is the value of pO(2) in alveoli and tissues respectively?

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  3. How many layers form the diffusion membrane ?

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  4. What is the percentage of O(2) transported in dissolved form through...

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  5. How many molecules of O2 can associate with a molecule of haemoglobin ...

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  6. To which part of Hb, CO(2) binds?

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  7. Which of the following condition is not reponsible for shifting the ...

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  8. Which of the following factors favour the formation of HbCO2?

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  9. Pneumotaxic center which can moderate the functions of the respiratory...

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  10. A chronic disorder in which alveolar walls are damaged due to excess...

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  11. Which of the following is not a symptom of asthma?

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  12. In mature mammalian erythrocytes, the respiration is

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  13. Which of the following is not a character of respiratory surface?

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  14. Skin of man cannot act as respiratory organ because

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  15. Adam's apple is another name for

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  16. Ring - like cartilage of larynx is known as

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  17. Which of the following prevents collapsing of Trachea

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  18. The number of alveoli in the human lungs has been estimated to be appr...

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  19. In human, oblique fissure is present in

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  20. If a person exhales out forcefully by applying all his efforts, what w...

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