triangular lamella


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tela cho·roi'dea of third ven·tri·cle

a double fold of pia mater, enclosing subarachnoid trabeculae, between the fornix above and the epithelial roof of the third ventricle and the thalami below; at each lateral margin is a vascular fringe projecting into the choroidal fissure of the lateral ventricle; on its undersurface are several small vascular projections filling the folds of the ependymal roof of the third ventricle.
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triangular lamella

The small fibrous lamina between the choroid plexuses of the third ventricle of the brain.
See also: lamella
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