Structure of the Hypothalamus The hypothalamus is a vital part of the diencephalon, located at the base of the brain below the thalamus and above the pituitary gland. It plays a crucial role in maintaining homeostasis and regulating various physiological processes. Anatomical Structure Major Nuclei of the Hypothalamus Blood Supply Clinical Significance Pineal Gland The pineal gland is a small, pea-shaped endocrine gland located in the brain. It plays a