Lumen — Free Physiology Illustration | GPAI | GPAI

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Lumen — Free Physiology Illustration | GPAI | GPAI

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Lumen

Lumen

Physiology

Lumen

The hollow internal space of a tubular or hollow organ, shown as a clean open oval, circular, or gently curved channel in white or pale cream. The cavity appears empty or only lightly shaded, bordered by a smooth distinct inner lining or epithelial edge and surrounded by tissue walls, emphasizing the interior passageway.

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