Which of the following are the correct statement for respiration in human

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Which of the following are the correct statement for respiration in human

Options

(a) Cigarette smoking may lead of inflammation of bronchi
(b) Neural signals from pneumotaxic centre in pons region of brain can increase the duration of inspiration
(c) Workers in grinding and stone-breaking industries may suffer from lung fibrosis
(d) About the 90% of carbon dioxide (CO₂) is carried by haemoglobin as carbamino haemoglobin

Correct Answer:

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

Explanation:

(a) and (c). Neural signals from pneumotaxic center in pons region of brain can limit the duration of inspiration. About 25% of carbodioxide (CO₂) is carried by haemoglobin as carboxyhaemoglobin.

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Topics: Human Physiology Systems (35)
Subject: Biology (4253)

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