Base Of The Infundibulum Floor 3rd Ventricle

Around the base of the infundibulum is the median eminence a raised portion of hypothalamic gray matter.

Base of the infundibulum floor 3rd ventricle.

The diocoel is the 3rd ventricle that is located in the diencephalon which is made up of the thalamus epithalamus and hypothalamus. Distortion of the pituitary infundibulum can also cause endocrine dysfunction 2. The thalamus is laterally present along the 3rd ventricle. It is a median cavity situated between the right and left thalami fig.

Like other ventricles the third ventricle has a cavity an anterior wall a posterior wall a floor a roof and two lateral walls. It communicates on either side with the lateral ventricle through the interventricular foramen figs. The third ventricle the third ventricle is the cavity of the diencephalon. 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.

We discuss here the structures forming the roof floor anterior wall posterior wall lateral wall of third ventricle. Contains drawn and explained detailed description of third ventricle of brain. Here s the floor of the third ventricle here s the optic chiasm here s the infundibulum leading down to the pituitary gland or hypophysis. The floor of the third ventricle is ormed by optic chiasma the infundibulum and the tubular cinereum.

The median eminence and the tuber cinereum which is also part of the hypothalamus form most of the floor of the third ventricle. Apart from the hypothalamus the mammillary body infundibulum and the tectum of the midbrain also forms the. Running through the third ventricle is the interthalamic adhesion which contains thalamic. The anterior and posterior parts of the pituitary gland are quite distinct.

These portions of the hypothalamus lack a blood brain barrier and typically enhance with gadolinium on mr images. The hypothalamus is present anteroinferior that is it forms the floor of the 3rd ventricle. Only tumors with third ventricle involvement i e. Roof formed by body of fornix and the ependyma lining the under surface of the tela choroidea.

Posteriorly it continues into the cerebral aqueduct which connects it to. 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. Third ventricle floor structures including the pars tuberalis infundibulum and mammillary bodies or those that partially or completely occupied the space of the third ventricle 4 8 according to magnetic resonance imaging mri were studied.