Final answer:
Cortisol is not synthesized in the hypothalamus; it's produced in the adrenal cortex. The hormones that are produced in the hypothalamus include gonadotropin releasing hormone (GnRH), growth hormone inhibiting hormone (GIH or somatostatin), antidiuretic hormone (ADH or vasopressin), and oxytocin.
Step-by-step explanation:
All of the following hormones are synthesized in the hypothalamus EXCEPT cortisol. The hypothalamus produces a variety of hormones, such as gonadotropin releasing hormone (GnRH), growth hormone inhibiting hormone (GIH) also known as somatostatin, antidiuretic hormone (ADH) or vasopressin, and oxytocin. These hormones have different roles, for example, GnRH stimulates the release of gonadotropins (FSH and LH) from the anterior pituitary, and GIH inhibits the release of growth hormone (GH).
Cortisol, however, is not synthesized in the hypothalamus; it is produced in the adrenal cortex in response to adrenocorticotropic hormone (ACTH), which is secreted by the anterior pituitary. The release of ACTH is, in turn, stimulated by corticotropin releasing hormone (CRH) produced by the hypothalamus, highlighting the complexity of the endocrine system's regulatory mechanisms.