Answer:
hypothalamus; homeostasis
Explanation:
The hypothalamus is located at the base of the brain, below the thalamus and above the pituitary gland and is about the size of an almond. It is divided anatomically and physiologically into three parts: anterior, middle and posterior.
The hypothalamus coordinates most endocrine functions, exerting direct action on the pituitary gland and indirect action on other glands such as adrenal, sexual gonads, thyroid and mammary glands. It also acts on regulating temperature, appetite, thirst, sleep cycle and autonomic nervous system.
From this we can conclude that the hypothalamus in the brain contributes to maintaining the body a stable internal physiological state called homeostasis.