A researcher studying the effects of exercise on the cardiovascular system finds that regular physical activity increases the production of nitric oxide in the blood vessels. Which of the following effects is primarily caused by this increase in nitric oxide production?
Q1. A researcher studying the effects of exercise on the cardiovascular system finds that regular physical activity increases the production of nitric oxide in the blood vessels. Which of the following effects is primarily caused by this increase in nitric oxide production?
Answer: Relaxation of smooth muscle cells
Explanation: Relaxation of smooth muscle cells causes vasodilation and decreased blood pressure, unlike increased peripheral resistance, decreased heart rate variability, and increased blood pH.