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.
Roof 4th ventricle.
The roof of fourth ventricle is the dorsal surface of the fourth ventricle.
The upper portion of the roof is formed by the cerebellum.
Just behind its outer surface is the lingula the.
The fourth ventricle has an anterior ventral floor with a characteristic diamond shape named the rhomboid fossa and a posterior dorsal tent shaped roof.
Csf produced and or flowing into the fourth ventricle can exit to the subarachnoid space through lateral apertures and a single median aperture located in the inferiorportion of the roof.
The obex is also a.
It corresponds to the ventral surface of the cerebellum.
The caudal tip of the fourth ventricle where it becomes the central canal is known as the obex.