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

Options

A. Cigraette smoking may lead to inflammation of bronchi
B. Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration
C. Workers in grinding and stone breaking industries may surffer from lung fibrosis
D. About 90% of cabon dioxide `(CO_(2))` is carried by haemoglobin as carbamino haemoglobin

Answer

C

Explanation

Irritating gases fumes, dusts, etc , present in the work place resutl in lung disroders. This is because the defence mechanism of the body cannot fully cope with this situation of so much dust. Long exposure can give rise to inflammation leading ot fibrosis (proliferation of fibrous tissue) and thus causing serious lung damage.