🫀 Your blood doesn't just travel through your body — it makes deliveries at every stop along the way. There are three types of blood vessels, and each plays a distinct role: Arteries — carry oxygen-rich blood away from the heart to the tissues. The femoral artery, for example, delivers blood directly to the quads during exercise, branching into smaller arterioles along the way. Capillaries — the real stars of the show. These microscopic exchange vessels are where the magic happens — nutrients a

How Red Blood Cells Squeeze Through Tiny Capillaries | 3D Animation