3D Model: Model A Stylized Cross-section Of A Human Artery Showing Atherosclerosis. The Artery Should Be Cut Open Lengthwise To Reveal The Interior. Make The Outer Wall Smooth And Cylindrical, With Red Coloring And A Slight Thickness. Inside The Artery, Model Three Main Layers: The Innermost Lumen (hollow Tunnel Where Blood Flows) — Make This Dark Red. A Fatty Yellowish Plaque Layer Bulging Into The Artery. This Should Look Soft And Organic, Irregular In Shape. A Red Blood Clot (thrombus) Attached To The Plaque — Shaped Like A Lump Or Droplet. Add A Small Tail-like Curve At The Top To Stylize The Vessel Ending, As Shown In The Reference. Use Soft Smooth Shading For A Clean, Medical Illustration Look.