Roof 4th Ventricle

The superior part of the roof is formed by the superior cerebellar peduncles and the superior medullary velum thin sheet of white matter.

Roof 4th ventricle.

Chaurasia 4th ed vol 3 pages 341 342. In contrast to the superior roof the inferior roof of the fourth ventricle is formed mainly by two thin membranes the tela choroidea and the inferior medullary velum. The inferior medullary velum is all that remains of the connection between the nodule and flocculus. The roof of the 4th ventricle is tent shaped and has upper and lower sloping surfaces.

The upper portion of the roof is formed by the cerebellum. The fourth ventricle has a roof at its upper posterior surface and a floor at its lower anterior surface and side walls formed by the cerebellar peduncles nerve bundles joining the structure on the posterior side of the ventricle to the structures on the anterior side. The roof of the fourth ventricle has presents a tent like apex at the intersection of it s superior and inferior parts. Inferior roof of the fourth ventricle.

Taeniae with the obex. The roof of ventricle is diamond shaped and can be divided into superior and inferior parts. Median eminence is seen in the floor of the fourth ventricle. This apex also known as the fastigium extends into the white core of the cerebellum.

It corresponds to the ventral surface of the cerebellum. The upper part of the roof is composed by a thin sheet of white matter the superior medullary velum that stretches between both superior cerebellar peduncles. The apex of the tent goes posteriorly into the white core of the cerebellum.