In the
brain, the taenia of the fourth ventricle (lingula, 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 fourth ventricle.
Each consists of a vertical and a horizontal part.
* The ''vertical part'' is continuous below the
obex with the
gracile nucleus
In neuroanatomy, the dorsal column nuclei are a pair of nuclei in the dorsal columns in the brainstem. The name refers collectively to the cuneate nucleus and gracile nucleus, which are present at the bottom of the medulla oblongata. Both nucl ...
, to which it is adherent by its lateral border.
* The ''horizontal portion'' extends transversely across the
inferior peduncle, below the
striae medullares
Winding around the inferior cerebellar peduncle in the lower part of the fourth ventricle, and crossing the area acustica and the medial eminence are a number of white strands, the medullary striae, which form a portion of the cochlear division of ...
, 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''.
Additional images
File:Gray649.png, Hind-brain of a human embryo of three months—viewed from behind and partly from left side.
File:Gray694.png, Section of the medulla oblongata at about the middle of the olive.
File:Gray695.png, Transverse section of medulla oblongata below the middle of the olive.
See also
*
Fourth ventricle
References
Ventricular system
{{Portal bar, Anatomy