Medical illustration showing a cross-section of a normal artery next to an artery with an aneurysm bulge, using a clean, educational style with labels. The aneurysm should show the thinning vessel wall with a noticeable balloon-like protrusion. Use soft, medical-textbook colors, Medical illustration of an artery cross-section showing normal artery next to artery with aneurysm bulge. Clear and educational style with labels. Aneurysm displays thinning vessel wall with balloon-like protrusion. Soft medical colors used