CBSE Class 12-science Answered
(i) Why is tobacco smoking associated
with rise in blood pressure
and emphysema (oxygen deficiency in the body)? Explain.
(ii) How does the moderate and high dosage
of cocaine affect the human body?
Asked by Topperlearning User | 11 Jun, 2014, 11:37: AM
Expert Answer
(i) Tobacco has nicotine that stimulates the release of adrenaline and nor-adrenaline, which raise blood pressure. Smoking tobacco releases carbon monoxide, which reduces the concentration of haem-bound oxygen. This causes emphysema.
(ii) Cocaine has a potent stimulating action on central nervous system producing a sense of euphoria and increased energy. Excessive dosage of cocaine causes hallucinations.
Answered by | 11 Jun, 2014, 01:37: PM
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