NEETZoologyHuman Health and Diseases
What are the dangers associated with smoking tobacco?
Options
- AIncreased risk of bronchitis and emphysema
- BReduced concentration of carbon monoxide in blood
- CDecreased incidence of lung cancer
- DIncreased levels of haemoglobin oxygen in blood
Correct answer
A. Increased risk of bronchitis and emphysema
Step-by-step solution
Smoking also paves the way to hard drugs. Tobacco has been used by human beings for more than 400 years. It is smoked, chewed or used as a snuff. Tobacco contains a large number of chemical substances including nicotine, an alkaloid. Tobacco chewing is associated with increased risk of cancer of the oral cavity. Smoking increases carbon monoxide (CO) content in blood and reduces the concentration of haembound oxygen. This causes oxygen deficiency in the body.Nicotine stimulates the adrenal gland to release adrenali