Which one of the following is the correct sta | vedclass

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(C) The correct statement is $(c)$. In certain industries,especially those involving grinding or stone breaking,so much dust is produced that the body

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

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(C) The correct statement is $(c)$. In certain industries,especially those involving grinding or stone breaking,so much dust is produced that the body's defense mechanism cannot fully cope with the situation.Long-term exposure to this dust can lead to inflammation,which causes fibrosis (proliferation of fibrous tissues),resulting in serious lung damage.Therefore,workers in such industries are advised to wear protective masks to prevent these respiratory disorders.Option $(a)$ is incorrect because while smoking causes bronchitis,it is not the most comprehensive statement regarding respiratory disorders in the context of occupational hazards.Option $(b)$ is incorrect because the pneumotaxic centre reduces the duration of inspiration.Option $(d)$ is incorrect because only about $20-25\%$ of $CO_2$ is carried by haemoglobin as carbamino-haemoglobin,while the majority is carried as bicarbonates.

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

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