Which one of the following is the correct statement for respiration in human?

  • Option 1)

    Cigarette smoking may lead of inflammation of bronchi

  • Option 2)

    Neural signals from pneumotaxic centre in pons region of brain can increase the duration of inspiration

  • Option 3)

    Workers in grinding and stone - breaking industries may suffer, from lung fibrosis

  • Option 4)

    About 90%of carbon dioxide (CO2) is carried by haemoglobin as carbamino haemoglobin

 

Answers (1)
D Divya Saini

As we learnt in 

DISORDERS OF RESPIRATORY SYSTEM -

Occupational Respiratory Disorders

- wherein

In certain industries, especially those involving grinding or stone-breaking, so much dust is produced that the defense mechanism of the body cannot fully cope with the situation. Long exposure can give rise to inflammation leading to fibrosis (proliferation of fibrous tissues) and thus causing serious lung damage.
 

 

 lung fibrosis occurrs due to dust 

 


Option 1)

Cigarette smoking may lead of inflammation of bronchi

Incorrect

Option 2)

Neural signals from pneumotaxic centre in pons region of brain can increase the duration of inspiration

Incorrect

Option 3)

Workers in grinding and stone - breaking industries may suffer, from lung fibrosis

Correct

Option 4)

About 90%of carbon dioxide (CO2) is carried by haemoglobin as carbamino haemoglobin

Incorrect

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