Taenia of fourth ventricle

• The vertical part is continuous below the obex with the gracile nucleus, 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.

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