Answer
The epithalamus is part of the diencephalon. It comprises the pineal gland, the habenula,, and parts of the roof of the third ventricle
Work Step by Step
The pineal gland is an endocrine gland that secretes the hormone melatonin. The habenula is situated on he dorsal side of the thalamus, and is embedded in the stria medullaris. It is a relay station for stimuli from the limbic system to the midbrain; it also mediates stress, anxiety and learning.
