MHT CET Biology question

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

(A)Cigarette smoking may lead to inflammation of bronchiCorrect
(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 fibrosisCorrect
(D)About 90% of carbon dioxide () is carried by haemoglobin as carbaminohaemoglobin

Answer: (A),(C)

Solution

Smoking irritates the airways and leads to chronic bronchitis (inflammation of bronchi), and dust exposure in grinding and stone-breaking industries causes fibrosis of the lung; the pneumotaxic centre

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Question ID VK-078087