Your human body has two chemical messenger systems:Neurotransmitters and Hormones. 1) Where does each system primarilyoperate? 2) Which system is slower? 3) Briefly describe how the HPAaxis uses three main structures to cause cortisol to be releasedinto the bloodstream. 4) How does the HPA axis prevent itself fromconstantly releasing cortisol into the bloodstream once thethreatening stimulus has gone away?
