The roof is formed by the tela choroidea.
Floor of 3rd ventricle.
The hypothalamus is present anteroinferior that is it forms the floor of the 3rd ventricle.
The thalamus is laterally present along the 3rd ventricle.
Anterior posterior and two lateral.
The third ventricle is one of the four connected ventricles of the ventricular system within the mammalian brain 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 csf.
The lateral walls of the third ventricle are formed by the walls of the left and right thalamus.
The third ventricle sends messages to and receives messages from the lateral ventricles which are located in front of the third ventricle and the aqueduct of the midbrain which is located.
The third ventricle in blue is a narrow vertical cleft between the 2 lateral ventricles it possesses a roof a floor and four walls.
The diocoel is the 3rd ventricle that is located in the diencephalon which is made up of the thalamus epithalamus and hypothalamus.
The floor of the third ventricle is formed by a number of structures including the hypothalamus subthalamus mammilary bodies infundibulum pituitary stalk and the tectum of the midbrain.
Floor and roof the floor is formed by the optic chiasma the tuber cinereum and the infundibulum the mamillary bodies the posterior perforated substance and the tegmentum of the midbrain.