Question

Question 3: a) What would be the effect on heart rate of bathing an isolated human heart (in a preparation such as the one used here) with nicotine? b) What would be the effect, on heart rate, of injecting nicotine into the blood in a live human? Explain your answers.

Answer 1

Answer 3a:)

Nicotine increases the heart rate and due to a higher heart rate, the heart would stop to work because of the heart attack.

Answer 3b:)

Nicotine in the blood causes constriction of blood vessels and hardening of their walls due to the formation of plaques.