VAN 121: Veterinary Gross Anatomy-II (2+2)

THIRD VENTRICLE

• It is the narrow annular space around the fused medial faces of the two thalami.
• It communicates in front with the lateral ventricles through the interventricular foramen of Munro and behind with the fourth ventricle through the cerebral aqueduct.
• The floor of the ventricle is formed by the structures of the interpenduncular fossa.
• The roof is formed by the telachorioidea and fornix.
• The anterior wall is a thin layer of gray mater stretching from the superior face, of the optic chiasma to the rostrum of the corpus callosum.
• The cavity of the third ventricle presents three recesses the optic recess into the optic chiasma, pineal recess into the stalk of pineal body, the infundibular recess in the infundibulum or stalk of the pituitary gland. (Click here to view the image)