A researcher studying the effects of physical activity on cardiovascular function observes that regular exercise reduces the risk of cardiovascular disease. Which of the following physiological changes is primarily responsible for this effect?
Q1. A researcher studying the effects of physical activity on cardiovascular function observes that regular exercise reduces the risk of cardiovascular disease. Which of the following physiological changes is primarily responsible for this effect?
Answer: Enhanced vasodilation
Explanation: Regular exercise enhances vasodilation, which reduces peripheral resistance and improves blood flow to the heart, reducing the risk of cardiovascular disease.