The Cardiovascular System Explained | How Your Heart & Blood Vessels Workbr br Ever wondered how your heart, blood vessels, and circulation work together to keep you alive? In this video, we break down the cardiovascular system in a simple and engaging way! Learn how your heart pumps blood, how oxygen and nutrients are transported, and why your circulatory system is vital for survival.br br 🌟 Key Topics Covered:br ✔️ What is the cardiovascular system?br ✔️ How the heart works & pumps bloodbr ✔️ Arteries vs. veins vs.