Valparaiso Climate & Temperature. 1  Valparaiso, Chile is at 330'S, 715'W, 41 m (135 ft). 2  According to the Holdridge life zones system of bioclimatic classification Valparaiso is situated in or near the cool temperate steppe biome. 3  The mean annual temperature is 14 degrees Celsius (57.2 degrees Fahrenheit).
corticotropin-releasing hormone (CRH). [korâ²kÃ´râ²tikÅtrop]. in a polypeptide hormone secreted by the hypothalamus into the pituitary portal system where it triggers the release of adrenocorticotropic hormone from the pituitary. gland
Cortisol levels are regulated by adrenocorticotropic hormone (ACTH), which is synthesized by the pituitary in response to corticotropin-releasing hormone (CRH). CRH is released in a cyclic fashion by the hypothalamus, resulting in diurnal peaks (6 a.m.-8 a.m.) and nadirs (11 p.m.) in plasma ACTH and cortisol levels. The majority of cortisol circulates bound to cortisol-binding globulin (CBG-transcortin) and albumin.