tela choroidea of third ventricle

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. Synonym(s): tela choroidea ventriculi tertii [TA], tela choroidea superior, triangular lamella, velum interpositum, velum triangulare

te·la cho·roi·de·a of third ven·tri·cle

(tē'lă kōr-oyd'ē-ă thĭrd ven'tri-kĕl) 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.
Synonym(s): tela choroidea superior, tela choroidea ventriculi tertii