Russell, who smokes, has been experiencing erectile dysfunction. This condition may A) be evidence of underlying cardiovascular disease. B) be due to the effects of nicotine on Russell's prostate gland. C) reflect the role of nicotine in dilating blood vessels. D) be somewhat more common in smokers than in non-smokers.
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Russell, who is a smoker, is experiencing erectile dysfunction (ED). The question presents multiple potential reasons for this condition and asks which one could be the cause. Show more…
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Smoking tobacco is bad for your circulatory health. In an attempt to maintain the blood's capacity to deliver oxygen, the body increases its red blood cell production, and this increases the viscosity of the blood. In addition, nicotine from tobacco causes arteries to constrict. For a nonsmoker, normal blood flow requires a pressure difference of $8.0 \mathrm{mm}$ Hg between the two ends of an artery. Assume that smoking increases viscosity by $10 \%$ and reduces the arterial diameter to $90 \%$ of its previous value. For a smoker, what pressure difference is needed to maintain the same blood flow?
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