Hypothalamus

The hypothalamus is an almond sized region of the brain that links the rest of the nervous system to the endocrine system through the pituitary gland. It's located above the brainstem and below the thalamus. It plays a vital role in the regulation of body temperature, appetite, thirst, fatigue, and sleep. 
Hypothalamus at Wikipedia
Category:Anatomy
Category:Stubs
Category:Endocrinology