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Which one of the following is the correc...

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

A

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

B

About 90% of carbon dioxide `(CO_(2))` is carried by haemoglobin as carbamino haemoglobin

C

Cigarette smoking may lead to inflammation of bronchi

D

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

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The correct Answer is:
A
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