WAEC Biology 2012 Objective — Question 15

Question 15 of 60 from the West African Examinations Council (WAEC) Biology 2012 Objective paper, with the correct answer and a full explanation.

Increasing adrenaline content of the blood would be expected to decrease the flow of blood to the

A. Liver
B. heartCorrect
C. lungs
D. brain

Explanation

Increasing adrenaline content increases the rate of heart contraction, which leads to increase in blood pressure. This means blood flowing back to the heart is limited as the amount of blood leaving the heart is increased.

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