Which of the following is the correct statement for respiration in human ?
Answers
Answer:
Cigarette smoking causes an immunogenic response. It results in increased levels of inflammatory markers. It may result in the development of irreversible narrowing of bronchial tubes due to inflammation and scarring. It causes cancer, chronic lung disease. The pneumotaxic center in the pons region of the brainstem moderate the functions of the respiratory rhythm centre. It reduces the duration of inspiration and therefore alters the respiratory rate. Workers in grinding and stone-breaking industries may suffer from lung fibrosis. Exposure to environmental pollutants like silica, metal dusts, bacteria and animal proteins can lead to lung fibrosis. Carbon dioxide is carried in blood as bicarbonate, dissolved CO
2
and carbaminohemoglobin. About 29% of it is carried as carbaminohaemoglobin.
Thus, the correct answer is option C.