O-LevelBiologyTransport in Humans5090/12 · May/June 2021 · Q251 Mark
Electronic cigarettes are a cigarette substitute allowing nicotine to be inhaled without the other components found in cigarette smoke. Which effects of cigarette smoking will also be effects of using electronic cigarettes?
ASmoking increases heart rate, narrows the arterioles and increases blood pressure.
BSmoking irritates the airways and increases mucus production.
CSmoking reduces oxygen carried by red blood cells and reduces oxygen delivered to the tissues.
DSmoking narrows the airways and increases coughing.
✓ Correct answer
A: Smoking increases heart rate, narrows the arterioles and increases blood pressure.
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