Types of Hormones Chemical Messengers Chemial Description Example Autocrine nactvty Prostaglandins Paracrine saol品dns Hormone vey the Neurohormone nelonomo rt hormone Neurotransmitter g08gyspCe8s0ree8iorces Pheromone eaegn888ypaheeaaier 989m9a8s of other individuals (e.g.,dogs and cats)