noun (plural epithalami /ˌɛpɪˈθaləmʌɪ/ /ˌɛpɪˈθaləmiː/)Anatomy
A part of the dorsal forebrain including the pineal gland and a region in the roof of the third ventricle.
- In addition to the latter, the following components of the epithalamus can be distinguished: the habenular commissure, the pineal body, and the posterior commissure.
- Parts of the epithalamus that are visible in a mid-sagittal view of the gross brain include the pineal body or gland, the habenula, and the stria medullaris.
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