Roof Of Third Ventricle

The third ventricle is one of the four connected ventricles of the ventricular system within the mammalian brain.

Roof of third ventricle.

The third ventricle receives csf from the lateral ventricles and conveys it to the fourth ventricle which. The roof is separated from the lateral wall by the choroidal fissure which runs in the cleft between the upper part of the thalamus and the fornix. The tela chorioidea is a dense network of capillariesthat is surrounded by ependymal cells. The roof of the third ventricleis formed by a part of the choroid plexusknown as the tela chorioidea.

The narrow roof of the third ventricle is formed by a thin membrane known as the tela choroidea. It is a slit like cavity formed in the diencephalon between the two thalami in the midline between the right and left lateral ventricles and is filled with cerebrospinal fluid. The median part lies over the roof of the 3rd ventricle whereas the lateral margins project through the choroid flissure into the lateral ventricle. The roof of the third ventricle starts anteriorly at the foramen of monro and ends posteriorly in the suprapineal recess.

The floor is formed by the optic chiasma the tuber cinereum and the infundibulum the mamillary bodies. A roof a floor and four walls. Running through the third ventricle is the interthalamic adhesion which contains thalamic neurons and fibers that may connect the two thalami. The tela choroidea is a term for the combination of pia mater and ependyma which are both types of.

It extent is anteriorly till the interventricular foramen and posteriorly till the transverse fissure gap between the splenium of corpus callosum and roof of 3rd ventricle.