RED BLOOD CELL SUPER-HIGHWAY: NAVIGATING THE CARDIOVASCULAR SYSTEM
You know that lub-dub sound your heart makes. You’ve felt the pulse in your wrist. It all indicates that your body is still running. But the blood coursing through your arteries and gently flowing in your veins didn’t get there by accident. Your blood, blood vessels, heart, and lungs, all work together to bring the oxygen you breathe to the rest of your body. This relationship is known as the cardiovascular system, and it works 24/7 to keep you moving.