Part of the brain’s second portion, or ‘tweenbrain.
The part of the forebrain containing the pineal body.
Part of the forebrain, consisting of a narrow band of nerve tissue in the roof of the third ventricle (including the region where the choroid plexus is attached) and the pineal body.
The uppermost portion of the diencephalon of the brain. It includes the pineal body, trigonum habenulae, habenula, and habenular commissure.