Answer: hypothalamus
Explanation:
hypothalamus is a portion of the brain, it contains a small number of nuclei and has many functions.
Hypothalamus is to link the nervous system, to the endocrine system through the pituitary gland to synthesize various hormones.
medulla is located in the inner part of the adrenal gland and secrete epinephrine and non epinephrine hormone that are triggered by physical and mental stress.
