The taenia of the fourth ventricle
, tenia of fourth ventricle
) are two narrow bands of white matter
, one on either side, which complete the lower part of the roof of the cavity.
Each consists of a vertical and a horizontal part.
- The vertical part is continuous below the obex with the clava, to which it is adherent by its lateral border.
- The horizontal portion extends transversely across the inferior peduncle, below the striæ medullares, and roofs in the lower and posterior part of the lateral recess; it is attached by its lower margin to the inferior peduncle, and partly encloses the choroid plexus, which, however, projects beyond it like a cluster of grapes; and hence this part of the tænia has been termed the cornucopia.