Cardiovascular / VISUAL EXPLAINER
Do Arteries and Veins Have the Same Wall Layers?
Arteries and veins have layered walls. This comparison highlights the inner lining, muscular middle coat and outer connective coat, using a representative muscular artery and vein.
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What the illustration shows
English poster on navy titled Do Arteries and Veins Have the Same Wall Layers? Two enlarged cutaway vessels compare a muscular artery at left with a vein at right. Each has a clear central lumen, thin pale intima, coral smooth-muscle media and ivory fibrous externa. The artery has a thicker media; the vein a relatively larger lumen and thinner media. Correctly placed leaders identify all three coats and each lumen. A lower enlarged wall strip labels intima, media and externa in inner-to-outer order. Text defines arteries by carrying blood away from the heart and veins toward it. The illustration states representative vessels, variable proportions, not to scale. Gold AllHumanBody.com and full slogan below.
How to interpret this poster
- Representative larger vessels only; relative wall thickness, shapes and colors are not universal and do not apply unchanged to capillaries.
- AI-assisted educational illustration; not physician certification, microscopy, a diagnosis or individualized medical advice.
- Fine annotations need enlargement; the full description provides an accessible text alternative.
- Display the full uncropped illustration; do not trim titles, legends or boundary annotations.
AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.
EVIDENCE / CONTEXT
Sources and what they support
- OpenStax anatomy textbook ↗
All three claims; typical differences, not universal diameter ratios.