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Human Health and Disease — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease2 Marks
Question
Why are adolescents especially advised not to smoke? How does smoking affect the functioning of the body?
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Answer

Because of its addictive nature, it is hard to get rid of the use of tobacco and it paves way to hard drugs.
III Effects of smoking of Tobacco:
  • Smoking of tobacco is associated with cancer of lungs, urinary bladder and throat, bronchitis, emphysema, coronary heart diseases, etc.
  • Smoking also increases the CO content in blood and reduces the concentration of haembound oxygen, thus causing oxygen deficiency in the body.
  • Nicotine, an alkaloid present in tobacco, stimulates the adrenal glands to secrete adrenaline and noradrenaline, which increase the blood pressure and heart rate.

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