Institute of Human Anatomy on Instagram: "Arteries vs Veins: The Difference You Can SEE 🫀💉 Ever wondered what makes arteries and veins so different? Let me show you using real human anatomy from the thoracic cavity! It all comes down to what's in the vessel wall: ✅ Arteries have MORE smooth muscle and elastic connective tissue ✅ Veins have THINNER walls with less elastic tissue Why Does This Matter? When your heart pumps blood from the left ventricle into the aorta, the artery stretches. Then