Assertion: pia mater | /r/CapableOf | form double layer
Facets:
Source sentences:
text: At certain points in the third, fourth and lateral ventricles the pia mater forms a double layer and is covered by ependymal cells to create the tela choroidea.
text: At certain points in the third, fourth and lateral ventricles the pia mater forms a double layer and is covered by ependymal cells to create the tela choroidea.