In histology, correctly identifying a vein is crucial for accurate diagnosis. A vessel's structure—thin walls, irregular shape, and absence of internal elastic lamina—distinguishes it from arteries. Pay close attention to the tunica intima, media, and adventitia layers. Veins often appear collapsed in cross-section and may contain valves. Remember: vein walls are thinner relative to lumen size compared to arteries. This note reinforces the importance of recognizing these features to avoid misidentification.
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