mdcat logical reasoning MCQ #913

A researcher is studying the effects of caffeine on the cardiovascular system. Which physiological response is most directly related to caffeine's stimulant effects?

mdcat logical reasoning MCQ #913

  1. Question 1

    Q1. A researcher is studying the effects of caffeine on the cardiovascular system. Which physiological response is most directly related to caffeine's stimulant effects?

    • A) Increased heart rate due to vagal inhibition
    • B) Increased cardiac output due to vasodilation
    • C) Increased blood pressure due to vasoconstriction
    • D) Decreased blood pressure due to vasodilation

    Answer: Increased heart rate due to vagal inhibition

    Explanation: Increased heart rate due to vagal inhibition is the most direct response to caffeine's stimulant effects, mediated by blocking adenosine receptors.