The nicotine present in tobacco stimulates adrenal glands to secrete adrenaline and noradrenaline. Both these hormones increase blood pressure and heart rates. Smoking increases carbon monoxide level of the blood, which competes with oxygen for transport. As the concentration of haem-bound oxygen decreases, there is oxygen deficiency in the body.
Why is tobacco smoking associated with rise in blood pressure and emphysema (oxygen deficiency in the body) ? Explain.
Answers
Rijwan Ahamad
The nicotine present in tobacco stimulates adrenal glands to secrete adrenaline and noradrenaline. Both these hormones increase blood pressure and heart rates. Smoking increases carbon monoxide level of the blood, which competes with oxygen for transport. As the concentration of haem-bound oxygen decreases, there is oxygen deficiency in the body.