This chapter includes contents: The body’s long-distance regulators; the endocrine system and the nervous system act individually and together in regulating an animal’s physiology; hormones and other chemical signals bind to target cell receptors, initiating pathways that culminate in specific cell responses; the hypothalamus and pituitary integrate many functions of the vertebrate endocrine system;. | Lecture Biology (7th edition) - Chapter 45: Hormones and the endocrine system