Doreen Pang Mrs. Trainor AP Psychology 11 October 2016 Module 4-4 The Endocrine System Our body has two communications system: Endocrine and Neural Endocrine System Travels through blood interconnected with the nervous system secrete glands chemical messages Hormones Chemical messengers that circulate in the blood Hormones Originates in one tissue travels through blood stream affects other tissues: like the brain influences: sex food aggression Some Hormones are chemically the same as neurotransmitters those chem. messengers: diffuse across synapse excite/inhibit an adjacent neuron Endocrine/nervous systems are kindred The 2 differences are: Slower Effects lasts longer both secrete molecules that activate receptors elsewhere Endocrine is slower than nervous system